Detective Jay Halstead is a member of Sergeant Hank Voight's CPD Intelligence Unit and is partnered with Detective Hailey Upton. Jay is the older[1] brother of Dr. Will Halstead, a main character on Chicago Med .

Biography Edit

The Halsteads are from Chicago, little is known about their family as neither brother talks much about it. Jay's brother Will is a doctor mentioned on Chicago Med that they were third-generation residents of the historically Irish-populated South Side neighborhood of Canaryville. They are from a blue-collar Irish Catholic background and both brothers attended Catholic school. It was revealed that their mother has passed away due to the fact that it was noted she was dying while Jay was deployed. Neither brother has had a good relationship with their father Pat as he disapproved of their career choices. While Will was able to reconcile with him, Jay never did and only discovered after Pat's death that the latter was actually proud of him as well.

He later admits to Upton that he found therapy helpful, though it is not until the season 6 episode Trigger that Halstead speaks at length about how his time over seas affected him, telling Upton that he had learned to deal with his PTSD and not let the past trauma define him.

Chicago PD Edit

Jay Halstead had been in the Intelligence Unit for a month when the show premieres. A skilled marksman and a former Ranger, he provides the tactical know-how and is often the designated sniper covering for the team when needed His interrogation tactics are blunt and tough.

Halstead accompanies Lindsay to her high school reunion. When Lindsay realizes she's out of place, the two instead go to dinner. There, she opens up about her childhood. It is also determined that Lindsay prefers to keep their relationship purely business because her boss Hank Voight (fatherly figure to Lindsay) doesn't tolerate relationships in the Intelligence Unit. 

Lonnie Rodiger had killed a young boy who Jay was very close with, since it was his ex-girlfriend's younger brother. But Lonnie's dad covered it up and took the blame although everyone knew Lonnie did it because he was a child rapist and pedophile. Jay strongly hated Lonnie and his father so when Lonnie Rodiger is found dead, Halstead is a suspect. Voight pulls Halstead's badge and has Dawson keep an eye on him. It is later revealed that Lonnie's father, Phil had discovered child pornography on Lonnie's computer and confronted him. The resulting argument ended in Lonnie being strangled with a belt.

When Lindsay accepts an offer from the Federal Bureau Of Investigation to join a new task force, she and Halstead begin a romantic relationship because they are not working together anymore but keep it on the down-low because they are both worried what Voight's reaction to the two of them dating will be. The two end up dating for a few episodes but when Lindsay returns to her job at Intelligence the two are very cautious about being caught. Halstead recommends coming forward and just telling Voight but Lindsay refuses and their relationship ends. Hank eventually figured out they were dating but never told Halstead and Lindsay that he knew.

In The Docks, Jay finds Antonio has survived the shot but is critically wounded. He is the most vocal against Alvin and Voight wanting to kill Pulpo instead of capturing him. Jay visits Antonio to relay the news about Pulpo and how it's unlikely to air on the evening news. Sharing Halstead's conviction for justice, Antonio tells him where he thinks Voight and Olinsky would take Pulpo: the docks. Jay heads there and finds the two detectives them, moments before sinking Pulpo into Lake Michigan wearing a "Chicago necklace" - chains around his neck linked to cement blocks. Jay pleads to Voight to not do it and the Sergeant refuses to give in - until Olinsky sides with Halstead. Pulpo will receive his day in court.

Season 2Edit

During Call It Macaroni, Jay shoots and kills Jacob Bembenek, brother of mobster Oskar Bembenek.

In Get My Cigarettes, Jay learns a $100,000 bounty has been placed on him by Oskar Bembenek. He thinks nothing of it, going by his normal life even hitting it off with a bartender until his home is ransacked. At the end, an attempt on his life is made and the bartender is shot.

As of The Weigh Station, Jay survives the attempt on his life and turns to tend to his bartender friend while Erin goes after the shooters. Jay’s friend survives but is put in the hospital for injuries. The next day, Jay is angry when he is put in protective custody by Voight. Kim and Roman safeguard him to prevent him from going after his assailants especially when the shooter is brought in and Jay wants to attack him. After Hank and Alvin bringing a former hitman Joe Price and they are able to contact the main orchestrator after Oskar. After the man demands to see Jay alive, Jay forces Price to agree to the deal despite the protest of his colleagues. During the deal price betrays Jay when his son is kidnapped. However, Jay overpowers him and force him to go along with the deal in exchange for saving his son. With help from Hank and the others all of the men are arrested. At the end, to prevent anymore attacks on Jay, Alvin has the Oskar transferred to the prison where the vengeful brother of his murdered mistress is held.

In the last several episodes of season 2, Lindsay spirals downhill and turns to alcohol and painkillers to deal with her guilt and grief over Nadia's death. Halstead persistently tries to maintain contact with her, even after Voight had given up. She turns in her badge to Voight, who declines to accept her resignation and files a 3-day leave of absence instead, but returns to the unit in the season 3 premiere after learning that Halstead had been kidnapped during an undercover operation gone wrong. They remain partners. Later in the season, Lindsay and Halstead get back together. Voight, previously against relationships in Intelligence, states that he no longer cares for that policy, mainly concerned with Lindsay's well being, which he entrusts Halstead with.

Season 3 Edit

In Life is Fluid, Jay is captured by a group of thugs while on an assignment. He is repeatedly tortured by being tased or beaten, though remains strong enough to endure it. He is saved by Erin who regained her wits to save him before the rest of the unit appears to arrest the thugs.

During Natural Born Storyteller, Jay is approached by Sergeant to have Erin’s back in her time of recovery. He is surprised but accepts the task no more what.

In A Dead Kid, a Notebook and a Lot of Maybes, Jay volunteers to speak with the child who is going to bomb the school with his friends who are committed suicide.

Season 4 Edit

Halstead tells Lindsay "Cases come and go, bosses come and go, jobs come and go, but I don't want you to come and go" and asks her to move in with him. They then decide to move into the apartment Lindsay already owns. Later once Lindsay and Halstead started living together and they admit their love for one another, Jay had plans to propose to her, but by the end of the season, their relationship had became increasingly estranged until it ended with Erin being forced to leave Chicago, in order to avoid the consequences of her committing brutality on a suspect.

In the episode "A Shot Heard Around the World", Jay isn't thrilled that his coworker and friend Antonio Dawson is leaving the unit. Dawson tells him that knowing the cop he has become made the decision easier to leave. During the case he is infuriated that the killer is ex military and he and his comrades all ran into a trap and laid by him.

Season 5Edit

In Care Under Fire, Jay is shown suffering from PTSD. He later volunteers to go undercover for a Ranger involved in a kidnapping.

During Monster, Jay continues to see Camila while going by Ryan.

In Rabbit Hole, Jay still sees Camila but sees she is spiraling into bad habits. However, he witnesses a crime go down and implores her to run. He is later question on the nature of this relationship by his Sergeant and he hast to lie to that he’s just using her as a unknowing CI. However he has to ultimately reveal his status as a cop to her when she’s involved in a shady business and a murder. At the end Hank later burritos him for lying and tells him that he’s going to be looked into.

During Confidential, Jay apologize to a sergeant for disobeying protocol. Subsequently he is put on desk duty and it sent to a counselor for his actions.

In Homecoming, Jay is one of the pallbearers to Alvin and pays tribute to his fallen comrade.

Chicago Med Edit

In 4x09 of Chicago Fire, Herrmann is stabbed by a paranoid worker - Freddie, also an ex-con, that Herrmann had hired after requests from Joe Cruz. Freddie is offended by a joke made by Herrmann and stabs him and runs off. In 1x04 of Chicago Med, firehouse 51 and the team of Med is there to treat Herrmann. Jay's brother, Will, is the attending with Dr. Rhodes. Things go sideways when Rhodes slightly delays in treating Herrmann, leading to a complication. Severide and the rest of 51 push on getting answers, leading them to ask Jay to ask Will - who has a very strained personal relationship with Rhodes - whether Rhodes made the right call. Jay asks Will, who tells him he personally thought that Rhodes delayed treating Herrmann. Jay tells Severide, who calls out Rhodes in front of everyone. Rhodes is upset and figures out it was Will and they argue. Will tells Jay their discussion was confidential, to which Jay replied he never explicitly said this. Will tells him he won't make that mistake again, while Jay replies he also won't be passing on information from crime scenes to him anymore. They later apologize to each other, resolving the argument.

Jay makes several other appearances on Chicago Med, noticeably when Natalie Manning asks him out on a date and he declines after talking to Will, telling him "man, you really need to get it together". He also assists on several criminal cases, including that of a young rape victim in "White Butterflies".

In Season 6, Jay appeared several times when Will got caught up in a money laundering case he was working on. Jay persuaded Will to work with the CPD and FBI in taking down Ray Burke, who was a family friend and whose sons had asked him to make a house call on their ill father. Will was reluctant in helping because he felt he was betraying his patients trust, but both Jay and Agent Ingrid Lee told him he had no other choice. In the end, Ray and his sons figured out Will was working with police and kidnapped him, forcing him to operate on Ray at gunpoint. Jay tracked him down and took him into Witness Protection until the threat was gone.

Relationships Edit


Pat HalsteadEdit

Jay was estranged from his father, as Pat disapproved of his and Will's career choices. While Will was able to reconcile with him, Jay never did and only discovered after Pat's death that the latter was actually proud of him as well.

Will Halstead Edit

Although Jay and Will are on good terms and very close, Jay has expressed some lingering resentment towards Will for not being there when their mother died, during which time Jay was deployed and Will was (in Jay's words) "out partying". While neither of them are close to their father, Jay, unlike Will, had not spoken to him in over two years prior to Will's introduction in season 2 of Chicago P.D. When Pat was hospitalized (Chicago Med season 2 episode "Generation Gap") Jay was very reluctant to see him even then. Jay seems to strongly dislike his father and exhibits a significant change in mood and demeanor whenever he is so much as mentioned.

Jay is extremely protective of Will and is very quick to jump to his defense. In The Number of Rats, the SVU crossover includes Will being called in for questioning by Voight and Olivia Benson without telling Jay the motive behind it. Olivia believes Will is connected to the brutal murders of young women, due to the fact that he works at a hospital and lived in New York where and when one of the victims was murdered and sees him as a suspect. Voight doesn't tell Jay this, who only finds out after Will is ambushed by the string of questions when he is brought in to "help". Jay is furious and demands Will be taken out as soon as he realizes what's going on, never once doubting his innocence. Will tries to say he will help and is ready to answer the questions but Jay won't let him, and forces him to leave and not say anything. In the Chicago Fire episode "I Am The Apocalypse", Chicago Med's backdoor pilot, Will is inside the Emergency Department when a terrorist sets off a bomb. He is not seriously injured, but Jay is shown to be very worried about him, immediately saying "tell me you're not in there" when Will calls him from inside the building. Likewise, Will has expressed his concern about Jay's mental well-being following Erin's sudden departure, his shot wound and the grisly and draining nature of his work in the CPD.


Abby McSweeneyEdit

Abby is Jay's estranged wife.

Abby and Jay met in the Rangers. They got married one night whilst they were very drunk in Vegas, after a fellow rangers funeral. Jay signed the divorce papers and hadn't seen her since. She returns in Remember the Devil, stating she filed the papers all those years ago. She says she needs to because she's getting married. However, she tells him later on that she's not getting married, she reveals she's back because she still loves him and wants a relationship. Jay tells her they can't be together and that she deserves someone who'll love her back. It is unknown from there whether or not they officiated a divorce.

Erin Lindsay Edit

Jay developed feelings for Erin after they started working together. After getting to know a little about her background, they both had feelings for each other, but Voight would not let them work together and date at the same time and so they didn't. However, in season 2, they started dating and assured Voight it wouldn't interfere with their work. This was after Lindsay temporarily accepted another job offer. Jay never really disclosed to Erin about his time in the military or opened up to her about the PTSD he had suffered. Only ever getting hints from Will or Mouse. They continued to date on and off but always remained close.  

However, in Season 2 , Lindsay broke it off after Nadia's death and left Intelligence, spending her nights in clubs and bars in grief. Jay was insistent on bringing her back and calling her everyday but she refused to do so. Voight left her after weeks of waiting, upset at her choice. In Life is Fluid, Jay was kidnapped and tortured in an undercover case gone wrong. Erin came back to save him, after which she came back to the unit and got back together with Jay.

In You Wish, Jay ordered a DNA test to see whether Jimmy, who Bunny claimed was Erin's real father, was her real father. She didn't want to do it but he did it behind her back and gave her the test that showed he wasn't. Jimmy lashed out in anger and Erin was extremely hurt, blaming it on Jay for ordering it in the first place. 

In Remember the Devil, Will told Jay that his ex, Abby, is in town and tracked them both down. Jay brushes it off until he sees her outside the station waiting for him. He tells Erin to go and meets up with Abby, who tells him that he needs to sign the divorce papers. Jay was married but he tells her he did sign them, which she says she threw away without filing. He agrees to re-sign. Erin eventually asks him if he's cheating on her. He tells her about Abby and their small marriage that he says was only a joke and it was over quickly. She is upset he didn't tell her about it but he feels guilty for not telling her about it. He meets up with Abby, who says she still loves him. Feeling conflicted, he immediately tells Abby no but goes home and packs. He tells Erin he'll be staying with Will for some time until things are okay. She tells him not to but he says he needs to sort his life out and leaves, that is when they break up. After that, they still have feelings for each other but are not together.

Jay later realizes he made a huge mistake by letting Erin go so he asks his brother to give him their mother's engagement ring, so he can propose to her. Unfortunately, by the time he got the ring and tells Erin to meet with him, she was already at New York for her new job.

Hailey Upton Edit

Initially, Halstead and Upton were on uneasy terms with one another on a case that brought her unit against his. However, after joining Intelligence, their relationship slowly begins to smooth out; both become good friends and partners with one another by the time Lindsay leaves for New York.

Throughout their time as partners, they have relied on each other as confidants and for comfort. Hailey is the first to suggest Jay get some help after an undercover operation gone awry triggers a relapse of his PTSD. His initial refusal to get professional help prompts her to threaten him with changing partners. She often asks for updates regarding his sessions and is happy to know that it benefits him. Likewise, Jay visits her after a similar operation turned personal for Hailey and shared a drink with her.

It is likely that she holds romantic feelings for him, however he doesn't seem to outwardly return those feelings. She is also the first to tend to Jay after he gets shot in "Endings", crying even after knowing he is okay because they are partners. Furthermore, after Jay sustains serious injuries in "Mercy", Hailey is deeply affected and doesn't leave the hospital until she knows Jay is okay. At the end of the episode, Hailey is about to express that she still has feelings for Jay but is interrupted by a phone call. Towards the end of season 7, it is implied that Jay is developing feelings for Hailey.


Antonio Dawson Edit

Antonio is the one who got Jay on the Intelligence unit by vouching for him to his sergeant. Jay is very appreciative of him, vowing to not let him down for giving him the opportunity.

Antonio often tries to keep Jay in line when he tries to question the Sergeant's way of police work. Despite this, the pair's status always stay on friendly ground.

Jay was also shocked to hear that Antonio will be transferred to working to the attorney office but supported him regardless.

Alvin OlinskyEdit

One of Jay's superior officers. Although they often don’t see eye-to-eye because of their respective views, Jay was the one to convince him and Voight not to kill Pulpo out of personal vendetta. They get along, especially because they are fellow veterans in the unit.

Greg "Mouse" Gerwitz Edit

Greg "Mouse" Gerwitz was Jay's best friend and part of his team when he was deployed to Afghanistan. During Mouse's interview for the IT job in "What Puts You On That Ledge," Platt mentions that Mouse recieved a medical discharge and asks him about the incident. Mouse tells her that he and Jay were in the lead of a convoy, and although he becomes very uncomfortable and does not continue, it is implied that their convoy was bombed and Mouse and Jay were both seriously injured, resulting in their medical discharge. They helped each other through their difficulties readjusting to civilian life and PTSD; Will tells Erin that Mouse was the one who looked after his brother after their return from war and helped him with "what he was going through", and Jay later reveals that Mouse would call him in the middle of the night when he couldn't sleep due to the psychological trauma. 

Mouse served as Jay's CI for a short period of time (likely due to his felony charge). The following year, Jay helps him get the job at the District, saying of Mouse, "I would trust him with my life. And I have, several times." He advocates for him when Voight is suspicious due to Mouse's criminal record and PTSD symptoms and is extremely concerned when he is held hostage in Actual Physical Violence, even telling Voight that he should be the one to kill Mouse's captor. 

In Season 4, Mouse starts thinking about going back to the Army Rangers. In Made A Wrong Turn, he tells Jay that he's been thinking about returning to the Rangers. Jay is immediately angry and worried about him, asking if he remembers "what it did to you". He tells him that they will discuss it later, and Mouse brings it up again in A War Zone, bringing the argument to a head. Jay also brings up Mouse's criminal record; Mouse then asks Voight for a favor to clean his record or he won't be allowed back, and Voight says he'll consider it. Mouse says he wants action, so Jay tells him to become a police officer like him, but Mouse says he was "born to be a soldier" and would re-enlist even if it meant death. Jay, blinded by his concern, refuses to let him and this angers Mouse, who then shouts back at Voight after ignoring him in front of the whole team, saying that this is the only thing he's ever asked for. Erin, after breaking up an argument between Jay and Mouse, helps Jay to realize that returning to the army is a bad idea - for Jay, and he is projecting that onto Mouse. Jay comes around and has Platt clear his record, telling Mouse at the end of A War Zone that if he wants to re-enlist, he's "behind him 100 percent". In a deleted scene, he says that he considers the Chicago P.D. - especially Jay - family, and he will always carry them with him.  

Hank Voight Edit

In earlier seasons, Jay was suspicious of Voight's activities and they often came to blows. However, Jay respected Voight for his intent on protecting the people of Chicago and getting the job done. This was best seen in The Docks, where Jay stops Voight from killing a perp. Although Voight nearly tried, he was talked out of it. At a bar, Voight surprises Halstead with encouragement; he respects the detective's conviction and tells him not to change at all, for the sake of the unit.

Voight also seems to care for Jay, as he put him under protection in The Weigh Station and didn't want him on assignment, knowing the potential dangers Jay could face. Despite his initially strict policy on relationships in his unit, Voight didn't seem to care for Jay's romance with Erin, as long as they could depend on each other.

In Get Back to Even, Voight later helped Jay protect Will, his brother, from harm when a gunman attacked them while the latter was operating on an off-book patient.

Notes and Trivia Edit

  • Halstead served in the 3rd Battalion 75th Ranger Regimen
  • Halstead has switched his service weapon three times:
    • Season 1 showed him using a Glock 17.
    • In seasons 2-5, Jay used a standard Glock 19.
    • After Confidential, he uses a modified version of the latter with a nickel-finished and serrated slide.
  • After "[riding] shotgun since day 1 with no complaint" alongside Erin Lindsay (and occasionally using her Chrysler 300C), he drives a GMC Sierra. In Season 6, this is switched out for a RAM 1500 Laramie Longhorn.
    • He has mentioned the former as being his "dream rig."
    • The latter is likely a nod back to the Dodge Ram 1500 previously used by Antonio Dawson, especially with its matte-gray repainting since Descent.
  • Jesse and Sophia were actually dating from 2014-2015/6.
  • According to a doctor, Jay has a large injury list.
    • He has had six broken fingers.
    • One broken wrist.
    • Five broken ribs.
    • Lacerated skull.
    • 100 stitches.

Season 1 Appearances
"Stepping Stone" "Wrong Side of the Bars" "Chin Check" "Now Is Always Temporary" "Thirty Balloons"
"Conventions" "The Price We Pay" "Different Mistakes" "A Material Witness" "At Least It's Justice"
"Turn the Light Off" "8:30 PM" "My Way" "The Docks" "A Beautiful Friendship"
Season 2 Appearances
"Call It Macaroni" "Get My Cigarettes" "The Weigh Station" "Chicken, Dynamite, Chainsaw" "An Honest Woman"
"Prison Ball" "They'll Have to Go Through Me" "Assignment of the Year" "Called in Dead" "Shouldn't Have Been Alone"
"We Don't Work Together Anymore" "Disco Bob" "A Little Devil Complex" "Erin's Mom" "What Do You Do"
"What Puts You On That Ledge" "Say Her Real Name" "Get Back to Even" "The Three Gs" "The Number of Rats"
"There's My Girl" "Push The Pain Away" "Born Into Bad News"
Season 3 Appearances
"Life is Fluid" "Natural Born Storyteller" "Actual Physical Violence" "Debts of the Past" "Climbing Into Bed"
"You Never Know Who's Who" "A Dead Kid, a Notebook and a Lot of Maybes" "Forget My Name" "Never Forget I Love You" "Now I'm God"
"Knocked The Family Right Out" "Looking Out For Stateville" "Hit Me" "The Song of Gregory Williams Yates" "A Night Owl"
"The Cases that Need to be Solved" "Forty-Caliber Bread Crumb" "Kasual with a K" "If We Were Normal" "In A Duffel Bag"
"Justice" "She's Got Us" "Start Digging"
Season 4 Appearances
"The Silos" "Made a Wrong Turn" "All Cylinders Firing" "Big Friends, Big Enemies" "A War Zone"
"Some Friend" "300,000 Likes" "A Shot Heard Around the World" "Don't Bury This Case" "Don't Read the News"
"You Wish" "Sanctuary" "I Remember Her Now" "Seven Indictments" "Favor, Affection, Malice or Ill-Will"
"Emotional Proximity" "Remember the Devil" "Little Bit of Light" "Last Minute Resistance" "Grasping for Salvation"
"Fagin" "Army of One" "Fork in the Road"
Season 5 Appearances
"Reform" "The Thing About Heroes" "Promise" "Snitch" "Home"
"Fallen" "Care Under Fire" "Politics" "Monster" "Rabbit Hole"
"Confidential" "Captive" "Chasing Monsters" "Anthem" "Sisterhood"
"Profiles" "Breaking Point" "Ghosts" "Payback" "Saved"
"Allegiance" "Homecoming"

Gallery Edit

References Edit

  1. Jay is older. Will stated that Jay is older, not younger than him.
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