Chicago Fire Wiki

Sylvie Brett is a paramedic assigned to Ambulance 61, introduced during Season 3 as Leslie Shay's replacement. Originally from Indiana, Brett quickly proved herself as a competent paramedic in the field. She was assigned to the position of Paramedic in Charge (PIC). She is portrayed by Kara Killmer.


She was born to a teenage mother named Julie, who gave her up for adoption.

Her adoptive parents raised her on a farm in Fowlerton, Indiana. They later had a son who became Sylvie's adoptive younger brother. Her father often work long hours and her mother once had an emotional breakdown, as a result of the stress. However, Brett's aunt Annie helped her along the way until her mother recovered.

Before moving to Chicago she was engaged to a man named Harrison.

Season 3

Sylvie joins the firehouse as a replacement for the deceased Shay. Initially, Dawson was cautious when working with her, but they quickly became best friends. However, when the house gets toned out for a call and Severide first sees her after returning from over a month-long break, he does a double-take while she's walking away from him, noticing the resemblance between her and Shay. This then escalates to the point where he tries to hang out with her, using her to get past Shay since they look alike. It takes him a long time to get past this until he gets married to Brittany.

Sylvie tells the house that she ran away after getting cold feet before her marriage. However, her husband to-be finds her working at 51 and comes to visit her. He apologizes in front of everyone for leaving her before their marriage, revealing that he's the one who had cold feet. Nonetheless, she gets back together with him briefly until she realizes he has a very overbearing nature. He psychologically tries to dominate her by telling her how she should feel and where she should work, as well as assuming that she was going to move in with him after getting robbed. She tells him she's happy in Chicago, but he tells her she isn't. She breaks up with him again after shaming him for his control issues and he leaves.

Sylvie joins the best rated Zumba club she found on Yelp and finds that the instructor is none other than Cruz. They agree to keep it a secret as long as she can teach him how to cook since he's opening Molly's 2, but she ends up telling Casey, due to his misunderstanding of the relationship of the two. She asks if he keep can it a secret, but he ends up telling it to Dawson, then Herrmann, then Mouch, then everyone else.(Chopper)

Cruz then asks her out and she rejects him. However, she accepts sometime later, and they start dating.

She's partnered with Peter Mills, who replaced Dawson as Paramedic in Charge, on Ambulance 61. They go on a call to help a teenage boy who was drowning and appeared to be stable when placed in the ambulance. However, on the ride to the hospital, he suffers from a pulmonary edema because of secondary drowning. He's pronounced dead not long after he arrives at the hospital. The boy's father is Papa Lullo, a senior mafia member. He turns up at the firehouse blaming Mills for his son's death. (Arrest in Transit)

Soon after this, Mills and Brett are called to help a man injured by a fall down a back ally. However, things seem suspicious when they get there as he wasn't injured by a fall, but run over and there's a vehicle blocking one of the ally's exits. Before they can load him into the ambulance, some of Lullo's men show up and kidnap them. It's hours before the station notices. (Santa Bites)

In the car, Brett and Mills both fight their kidnappers, causing the car to crash. Everyone survives the crash, but one of the kidnappers is severely injured and in need of medical attention. They're forced at gunpoint to try and save him without going to the hospital. Brett tells Mills to clamp where he shouldn't to let one of the captors die, but neither can go through with it. They manage to escape from their captors, but get themselves trapped. They're eventually rescued by Firehouse 51 and Jay Halstead. (Let Him Die)

She is upset that Mills has chosen to go to North Carolina near the end of Season 3 and during his goodbye party, she breaks down in tears and hugs him goodbye.

Season 4

During a call, Sylvie gets attached to a baby she delivered to a gunshot victim mother who died in the ambulance. She visits the baby in the hospital several times until Chief Boden finds out and tells her to let it go, as does Chili. However, she still goes back, where she meets Daniel Charles (Chicago Med). He tells her secretly to check the father's details while the receptionist is out. She goes to see him and tells him about his son, but he ignores her. However, when she comes back to see the baby yet again, the father is there and he thanks her.

She and Chili also help host a wedding, where she sings.

When Chili leaves for rehab, Brett is made Paramedic In Charge.

When she finds out that Jimmy is leaving, she confesses her feelings for him, which she later tries to cover up when she finds out he is staying in the CFD and working alongside her as her new partner. (Bad For the Soul)

Season 5

Both Chilli and Jimmy leave as paramedics, leaving Dawson to return to her old spot and work alongside Brett. However, Brett is in charge this time around, which is a difference Dawson doesn't seem to acknowledge sometimes. During one of the cases, Dawson's brother Antonio Dawson shows up and she instantly develops a liking towards him. After some consideration, she asks him out, but he refuses, saying that his breakup with his ex-wife is still on his mind and he doesn't want her mixed up in it. She responds by saying that she doesn't mind and as a result, they start going out.

She tries harder to impress Antonio's son Diego, who likes to play chess and whom she doesn't connect with. Otis teaches her how to play and Antonio later asks her to take care of Diego when he's suddenly called to work. She agrees and she and Diego are at the firehouse when Antonio's ex-wife, Laura, shows up abruptly and asks Diego to wait for her while she harshly tells Brett that she doesn't trust her and doesn't want a girl like her around her son. This upsets her and when Antonio shows up, she tells him what happened and he apologizes. She adds that she doesn't want to be in the middle of his fight with him and his ex-wife and he tells her that he warned her before this, but she replies that she didn't expect to be directly confronted by Laura. He lashes out and she breaks up with him.

Antonio later shows up at her door and apologizes, but she is still angry. She later tries to get her mind off Antonio by doing extra exercise at the firehouse, trying to find online makeup classes, changing her look and even learning German. Dawson feels bad and tries setting her up with people Casey knows, but Casey doesn't want to get involved in her love life.

Season 6

She helps Cruz develop his Slamigan tool by making prototypes using her welding skills to weld the halligan and sledgehammer together. (Slamigan)

Cruz freaks out over her safety after she and Dawson agree to help Antonio and Voight. They distract a patient whose house they have been called to three times prior under the pretence of doing a wellness check while a cop sneaks in the back door to clone the man's laptop. When there is a knock on the door, Brett hides a scalpel behind her back just in case. Back at the firehouse, she overhears Cruz arguing with Otis about Antonio putting her in danger. Cruz later apologizes. (Hiding Not Seeking)

In Looking for a Lifeline, Sylvie has a pregnancy scare and Dawson takes her to buy a pregnancy test at a drugstore. When Antonio comes by, Brett tries to tell him, but just starts crying instead. She tests negative, but seems to have mixed feelings about it. (The Chance to Forgive) Before Dawson leaves for Puerto Rico, Brett has a fight with her about Dawson not respecting her rank during a call.

She is very happy when her friend Hope Jacquinot came to visit her for a few days, though is dismayed with her developing a relationship with Kelly Severide. (It Wasn't Enough)

She continues to enjoy Hope being around but continues to be uncomfortable with her and Severide. She is the instructor learned Hope has accepted a position in the fire house as a receptionist and the latter said she wanted to surprise her.(Ignite On Contact)

Hope takes up a position at firehouse 51 as their receptionist, alongside Connie. She decides to break off her relationship with Severide while she gets started at her work. Connie gets a call from Hope's previous place of employment stating that Hope was accused of stealing $10,000. (An Even Bigger Surprise)

Hope tells Sylvie that she didn't steal anything, but that she had an affair with her boss which went sideways and led to her being accused of stealing which is why there weren't any charges made against her. Sylvie trusts her, though Kidd is still skeptical of her. (A Breaking Point)

Hope hands everyone their paycheck aside from Kidd's which she says is missing. Kidd thinks that Hope is messing with her or possibly stealing, especially given the rumors. Hope works hard to fix the issue and gets a new check for Kidd, which Kidd is impressed by. Sylvie, however, is more skeptical and questions her about making sure she's not trying to make herself look like a hero which she says she isn't. (Devil's Bargain)

Matthew Casey was concerned about how Stella Kidd had randomly been transferred to the PR unit and so looks into her transfer. It was signed by Chief Mullins and so Casey goes to ask him about it only to find that Mullins never signed the order. The order was forged by Hope as similarities could be seen between her handwriting and the signature given. She tried to explain her, but just ended up getting tongue tied and so Boden asked her to to pack up her desk and leave immediately.

She tries to explain herself to Sylvie by saying that she believed she was doing the right thing for women but that her actions were twisted, but Sylvie just shouts at her and walks away. Sylvie cut off ties with Hope and later calling Hope her 'former friend' and ignoring the messages Hope continues to send. (Down is Better)

Season 7

Sylvie dates a man named Kyle Sheffield, a chaplain with the CFD and a friend of Foster. Their relationship is going strong until Brett asks Kyle for a favor including the chaplain helping Casey to get through a rough call. Kyle immediately does reach out to Casey, who, however, refuses to confide in him as soon as he finds out the chaplain heard about the incident from Brett and haven't read it in the report. After this, Kyle breaks up with Sylvie citing that their relationship has led to firefighters not being willing to confide in him. Brett is visibly upset about this but doesn't try to mend it. (Fault in Him)

She has difficulty moving on from him and sympathizes with Casey on the subject of tough break-ups. She then attempts to help him out by setting him up with her spin class instructor, Olivia. (Try Like Hell)

After a game night with their friends, Olivia says Casey is great, but that Brett should be the one dating him as the two were "meant for each other". Later, Brett confides this to Foster and Kidd, who seem to agree with Olivia's assessment and leave Brett feeling confused about her feelings towards Casey.

Kyle comes to Molly's and tells Sylvie he's moving to Indiana. Casey mistakes their goodbye hug for a reconciliation one and tells Sylvie Sheffield is the right man for her. Kyle then comes to 51 and out of nowhere proposes to Brett. The paramedic accepts his proposal stating to Casey that him (unknowingly) encouraging her to be with Kyle was the only reason why she said yes. (I'm Not Leaving You)

Season 8

Sylvie leaves with Kyle following the boiler explosion. (I'm Not Leaving You)

Sylvie returns to her hometown with her fiancé Kyle, the couple bumps into Hope at the market. She was visibly uncomfortable to see Hope and Sylvie reminds Kyle that she told him about Hope. She offers lunch to catch up and for her to explain, something Sylvie tries to avoid but is pushed into by Kyle and Hope is excited. (Sacred Ground)

At lunch, she is still upset with Hope but eases up after she shows she is remorseful for her acts and reveals that at the time she was in Chicago, she had just gotten out of an abusive relationship. The pair make amends. (A Real Shot in the Arm)

She experiences relationship problem but tries to make it work with Kyle, though it was clear she misses her life in Chicago and isn't happy with her new quiet life with Kyle, so they break up.

She returns to Station 51 and is given her former position (Badlands.)

She is surprised when her biological mother wants to make contact and she has mixed feelings, but ultimately goes to see her. She realizes that she couldn't do it alone and asks Casey to come with her for support. After a terrible meeting with her stepfather Scott, she believes she made a mistake. While at the Firehouse, Capp tells her she has a visitor and she is approached by her birth mother, Julie, who apologizes for her husband's actions and reveals she is pregnant with her second child. Shocked, she listens as Julie tells her that she tracked her down because she wanted to make a connection with her before giving birth and have her in the child's life. (Off The Grid)

Brett spends time with Julie, who is happy at getting to know her and teases her for her obvious feelings for Casey. They soon believe that she is about to have the baby, but it turns out to be a false alarm, although the pair are still happy with the chance to talk more.(The Tendency of a Drowning Victim)

Brett continues to bond with her mother by helping her house shop.(Protect a Child)

She finds herself at the hospital with her biological mother giving birth. Unfortunately, Julie does not make it through the birth; however, the baby does. Brett became the older half-sister of a little girl.(I'll Cover You)

Sylvie is unable to come to terms with the fact that her mother has died, but attends the funeral with her adoptive family in attendance. She later goes to the hospital to check on her half sister and see if she is doing fine. She is dismayed to see that a riot has broken out at the fire house due to the closing of another house. Her stepfather Scott nearly forces her to care for the child or he'll give her up, but she later finds him at the hospital, outside his child's room pacing. After a talk, she convinces him to keep the child after seeing his concern for her and offers to help him in anyway she can.(Light Things Up)

Brett is pleased to see Scott has decided to keep the baby and named her Amelia, which was her mother's middle name. Scott announces he will move back home, but tells Brett to visit and be a part of her little sister's life. At the end of the episode, she is at Molly's when Capp returns and joins in the celebration for him.(51's Original Bell)

Season 9

Brett and the squad welcome new paramedic Gianna Mackey, a friend of Cruz. She is amused when Cruz is late to introduce her. She takes Mackey on a call, with both finding a man who has overdosed. While tending to him, a gun is held to her head by the man's brother, who threatens them to help him or die. She keeps her cool and talks him down before taking the brother to the ambulance to transport him to the hospital. Afterwards, she learns from Kim Burgess that the brothers are heavy criminals. She later hears the younger brother died and worries about the elder one taking revenge. She worries about him stalking her, especially when she finds her apartment door open. Not taking any chances, she calls Casey and he decides to sleep over to protect her. She and Casey spend the time joking around by playing games and having a good time. Much later, she and Mackey are called out and her stalker appears behind them in his car, ramming them off the road.(Rattle Second City)

Brett and Mackey are shown to have survived the crash, but are trapped inside the overturned ambulance. After breaking free, they wonder if the gunman is still out there. They are soon rescued after Casey and Truck 81 show up. They find the stalker trapped in his car, begging for help. Despite his actions, Brett frees him and gets him the medical attention he needs.(That Kind Of Heat)

Brett and Mackey become close, especially when the latter allows Brett to destroy a drone (that seriously injured a woman) to vent her frustration. Brett thanks her for this and gives her encouragement in pursuing Gallo.(Smash Therapy)

Brett goes to see Chief Boden, who is with Chief Coulson, the head of paramedics. Coulson reveals that a man Brett and Mackey treated had no trace of the drugs they gave him and accuses Mackey of stealing them from the ambulance. Shocked, Brett immediately jumps to her defense by denying this. At Molly's, she discusses the situation with Mackey and Cruz. After Cruz mentions a patient stealing drugs from a paramedic, Brett realizes that the people who called about a seizure were actually scam artists and that they stole the drugs after distracting them with the case. The pair then work together to find the real thieves. After doing so, Brett and Mackey tell the other paramedics that they were conned and Chief Coulson and the police arrive to arrest the culprits, who had the drugs in their pockets. Afterwards they celebrate at the bar, where Mackey expresses her gratitude to Brett for believing in her and Brett tells her she will always have her back, but jokingly leaves her to deal with Cruz, who has found out about her and Gallo.(Blow This Up Somehow)

Season 10

Brett is finally happy in the romantic department, but the amount of non-urgent calls Ambulances get worries her. Ever since the pandemic, they treat many "frequent flyers", which slows down their response times to actual accidents. She comes up with an idea of applying Paramedicine into practice, as they did in San Diego. Paramedicine is based on special relief units treating the patients who, for example, just forget to take their medicine (often in order to talk to the paramedics because their lonely).


  • In That Day, she mentions that she didn't kiss a boy until she was 17.
  • In One Hundred, it is revealed that Brett has coulrophobia, an irrational fear of clowns.
  • She was adopted, as revealed in Some Make It, Some Don't.
  • In Smash Therapy, it is shown Sylvie keeps a picture of her and her sister Amelia in her locker.
  • Ever since she moved out from the apartment she shared with Cruz, Foster (and Otis formerly), she lives in no. 4B.
  • She had a cat (Veronicat) for some time, but they didn't get along.
  • She's a great singer.
  • Her favorite movie is "La la land" which was revealed in The Tendency of a Drowning Victim.


Season 3
Always Wow Me Just Drive the Truck Apologies Are Dangerous The Nuclear Option
Madmen and Fools Nobody Touches Anything Chopper Arrest in Transit Santa Bites
Let Him Die Ambush Predator Three Bells Call It Paradise Headlong Toward Disaster
Red Rag the Bull Forgive You Anything Forgiving, Relentless, Unconditional I Am the Apocalypse You Know Where to Find Me
We Called Her Jellybean Category 5 Spartacus
Season 4
Let It Burn A Taste of Panama City I Walk Away Your Day Is Coming Regarding This Wedding
2112 Sharp Elbows When Tortoises Fly Short and Fat The Beating Heart
The Path of Destruction Not Everyone Makes It The Sky is Falling All Hard Parts Bad for the Soul
Two T's What Happened to Courtney? On the Warpath I Will Be Walking The Last One for Mom
Kind of a Crazy Idea Where the Collapse Started Superhero
Season 5
The Hose or the Animal A Real Wake-Up Call Scorched Earth Nobody Else Is Dying Today I Held Her Hand
That Day Lift Each Other One Hundred Some Make It, Some Don’t The People We Meet
Who Lives and Who Dies An Agent of the Machine Trading in Scuttlebutt Purgatory Deathtrap
Telling Her Goodbye Babies and Fools Take a Knee Carry Their Legacy Carry Me
Sixty Days My Miracle
Season 6
It Wasn't Enough Ignite on Contact An Even Bigger Surprise A Breaking Point Devil's Bargain
Down Is Better A Man's Legacy The Whole Point of Being Roommates Foul is Fair Slamigan
Law of the Jungle The F Is For Hiding Not Seeking Looking for a Lifeline The Chance to Forgive
The One That Matters Most Put White on Me When They See Us Coming Where I Want to Be The Strongest Among Us
The Unrivaled Standard One for the Ages The Grand Gesture
Season 7
A Closer Eye Going to War Thirty Percent Sleight of Hand This Isn't Charity A Volatile Mixture
All the Proof What Will Define You The Solution to Everything Always a Catch Inside These Walls
You Choose Make This Right The Plunge It Wasn't About Hockey What I Saw
Fault in Him Move a Wall No Such Thing as Bad Luck Until the Weather Breaks Try Like Hell
The White Whale I'm Not Leaving You
Season 8
Sacred Ground A Real Shot in the Arm Badlands Infection, Part I Buckle Up
What Went Wrong Welcome to Crazytown Seeing Is Believing Best Friend Magic Hold Our Ground
Where We End Up Then Nick Porter Happened A Chicago Welcome Shut It Down Off the Grid
The Tendency of a Drowning Victim Protect a Child I'll Cover You Light Things Up 51's Original Bell
Season 9
Rattle Second City That Kind Of Heat Smash Therapy Funny What Things Remind Us My Lucky Day
Blow This Up Somehow Dead of Winter Escape Route Double Red One Crazy Shift
A Couple Hundred Degrees Natural Born Firefighter Don't Hang Up What Comes Next A White-Knuckle Panic
No Survivors
Season 10
Mayday Head Count Counting Your Breaths The Right Thing Two Hundred
Dead Zone Whom Shall I Fear? What Happened at Whiskey Point? Winterfest Back with a Bang
Fog of War Show of Force Fire Cop An Officer With Grit The Missing Piece

Crossover Appearances

Chicago Med

Chicago P.D.