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Over the course of 33 seasons and 662 episodes , One Chicagohas experienced a good turn of cast exits , and as for the 2024–2025 idiot box season , six player and actresses across the three display will not be returningto the enfranchisement . TheOne Chicagouniversewas established in October 2012 with the premier ofChicago Fire , withChicago PDdebuting in January 2014 andChicago Medarriving in November 2017 ( a third spinoff , Chicago Justice , was released in March 2017 but was canceled after one time of year ) . All three adjective telly serial publication are still buy the farm strong , despite their various casting changes .
All threeOne ChicagoTV shows are put to premier on Wednesday , September 25 , on NBC , withChicago Medseason 10 dropping at 8 p.m. ET , Chicago Fireseason 13 at 9 p.m. ET , andChicago PDseason 12 at 10 p.m. ET . Each season is expected to hold back 22 episodes .
manoeuver into the 2024–2025 time of year , Chicago Fireis in its thirteenth season , Chicago PDis on time of year 12 , andChicago Medhas at long last reached doubly digitswith its tenth season . Given that each show has had retentive runs ( which is quite extraordinary in this day and eld of video ) , it pass water sentience why the dramatis personae do n’t look the same as they did during their pilot installment . Onlyfour initialChicago Firecast members remain in season 13 , whileChicago PDhas five original stars in time of year 12 andChicago Medhas three in time of year 10 .
6Dominic Rains As Crockett Marcel
Chicago Med
The semi - honorable tidings is that only oneChicago Medcast member is exiting ahead of the time of year 10 premiere ; the bad news is that cast member is Dominic Rains . Rains has played Dr. Crockett Marcel , a Fourth Year Resident in General Surgery who was after promoted to Attending Physician in General Surgery at Gaffney Chicago Medical Center , since the time of year 5 premiere . Chicago Medintroduced Marcel following the release of Colin Donnell ’s Dr. Connor Rhodes , and Rains has been a serial regular up until season 10 . Sadly , Marcel has exitedChicago Medfollowing the release of the season 9 finale .
One ChicagoTV Show
Season(s )
Episodes
Creators
Backdoor Pilot Premiere Date
Release Date
Finale Date
Chicago Fire
Custom Image by Simone Ashmoore
13
252
Michael Brandt and Derek Haas
Developed by Derek Haas and Michael Brandt, One Chicago is a multi-series television franchise that combines various public service/government organizations in Chicago, Illinois. Each series shares a timeline and universe, with multiple characters crossing over occasionally. The One Chicago universe began with Chicago Fire in 2012, with P.D., Med, and Justice comprising the remainder of one of NBC’s most successful primetime franchises.
N / A
October 10 , 2012
TBA
Chicago PD
12
221
Dick Wolf and Matt Olmstead
May 15 , 2013
January 8 , 2014
10
176
April 7 , 2015
November 17 , 2015
Chicago Justice
1
Dick Wolf
May 11 , 2016
March 1 , 2017
May 14 , 2017
Marcel ’s heartbreak touch on the destruction of his one - year - old girl resurfaced after he learned that his young patient had died during theChicago Medseason 9 finale . Marcel admitted that he had never right grapple with his heartbreak , and the episode ended with viewers call into question if he would take some time off from employment to sue his touch . However , it seems as though Marcel is taking a permanent vacation from Gaffney . What makesMarcel’sChicago Medexit so disappointingis that the medical dramatic event never gave him right closure , and now Rains is n’t returning to in good order wrap up his graphic symbol ’s fib .
5Tracy Spiridakos As Hailey Upton
Similar toChicago Med , only oneChicago PDseries fixture wo n’t be returning during the 2024–2025 season . Tracy Spiridakos ' Detective Hailey Upton say adieu to the Intelligence Unit and Chicagoduring theChicago PDseason 11 stopping point , while the audience sadly had to conjure Upton parting . Spiridakos was not a part of the police force procedural ’s original cast as she came in whenSophia Bush leftChicago PD . However , given Spiridakos ' term of office on the show and her character ’s grandness to the story , it felt like the actress had been around since the beginning . Now , Upton is belong ( and probably for good ) .
Chicago PDintroduced Upton towards the end of season 4,and NBC made Spiridakos a serial regular in time of year 5 following Bush ’s exit . Over the course of over seven time of year , Upton made her fall guy ontheOne ChicagoTV show . She connected with her colleague in the twenty-first District and examine her worth as an significant addition to the team .
Upton afterward started date her partner , Jay Halstead , and the two character terminate up get married in season 9 . Unfortunately , their family relationship was n’t built to last after Halstead rejoined the Army . Upton ultimately divorced Halstead in season 11,which partly contributed toSpiridakos ' character quitting and leaving the city at the end of theChicago PDseason 11 finis . So , Upton is not expected to look in season 12 .
4Rome Flynn As Derrick Gibson
Even though Rome Flynn ’s Derrick Gibson did n’t stick around for too long , the character’sChicago Fireexit in season 12 is still dissatisfactory . The NBC procedural dramaintroduced Gibson during season 12 , sequence 2,in the wake of Blake Gallo ’s exit . Gibson was a muscae volitantes firefighter antecedently assign to Truck 46 who joined Truck 81 after Stella Kidd saw him in activity and was impressed . However , Flynn ’s character would only be a part of Firehouse 51 for a handful of episode before leaving .
NBC replaced Gibson with Jack Damon ( who was later revealed to be Kelly Severide ’s half - crony ) , so , viewer should expect to see Jack , not Gibson , duringChicago Fire ’s 2024–2025 season .
Like many other character reference , Gibson and his past tense were a bit of a closed book at the beginning . It was later revealed that he was a former recreational bagger who accidentally shoot down someone in the ring , which conduce to his prescription drug abuse . Sadly , his addiction got out of script , andGibson get out Firehouse 51 to try treatment duringChicago Fireseason 12 , instalment 8.NBC put back Gibson with Jack Damon ( who was laterrevealed to be Kelly Severide ’s half - brother ) , so , viewers should expect to see Jack , not Gibson , duringChicago Fire ’s 2024–2025 season .
3Alberto Rosende As Blake Gallo
As mentioned above , Blake Gallo , played by Alberto Rosende , alsoexitedChicago Fireduring time of year 12.Gallo was first seen in season 8 , episode 2,following in the wake of the tragical destruction of Brian " Otis " Zvonecek . Rosende ’s fictitious character , who was ab initio assign to Truck 90 , joined Firehouse 51 after Matt Casey saw him wax a building to keep open someone . Impressed , Casey and Kelly Severide convinced Chief Boden to give Gallo a guess , and the young fire-eater became an official phallus of Truck 81 .
Chicago FireSeason 13 Cast
Role
Taylor Kinney
Kelly Severide
Miranda Rae Mayo
Stella Kidd
David Eigenberg
Christopher Herrmann
Christian Stolte
Randall " Mouch " McHolland
Joe Minoso
Joe Cruz
Daniel Kyri
Darren Ritter
Hanako Greensmith
Violet Mikami
Jocelyn Hudon
Lyla Novak
Dermot Mulroney
Dom Pascal
Jake Lockett
Sam Carver
Michael Bradway
Jack Damon
Over the course of Rosende ’s four seasons on the NBC adjective drama , his character farm and opened up about his tragical past . Gallo was n’t on the button golden in the love department as his fling with Violet Mikami ended before it even truly began , and Joe Cruz incessantly got in the style of his human relationship with Gianna Mackey . Ultimately , Gallo quit Firehouse 51 to move to Detroit , Michigan , to care for his auntin theChicago Fireseason 12 premiere , meaning Rosende wo n’t give back during the 2024–2025 TV season .
2Kara Killmer As Sylvie Brett
Just like Tracy Spiridakos inChicago PD , Kara Killmer was not an original member of theChicago Firecast as her character , Sylvie Brett , was introduced in season 3 to replace Leslie Shay as a paramedical on Ambulance 61.However , Brett lento but surely became an built-in quality on the show , make her exit all the more withering . Killmer remained a series regular for almost 10 season and 200 episodes , and , consequently , Brett ’s contribution to the series was priceless . Nevertheless , Killmer wanted to leaveChicago fervor , and the writers devised a perfect exit for her role .
Casey and Brett ’s hymeneals transpirate duringChicago Fireseason 12 , instalment 6 , and the two drove off into the sunset .
Jesse Spencer reprise his role as Casey during the time of year 11 close to propose to Brett . Since the episode ended with that cliffhanger , watcher did n’t get wind Brett ’s answer until the season 12 premiere . But , of form , Brett agree to get hitched with Caseyand move to Oregon to be with him . So , Casey and Brett ’s nuptials transpire duringChicago Fireseason 12 , episode 6 , and the two drove off into the sundown . regrettably , that intend that neither character will appear inChicago Fireseason 13 .
NBC has bring out Chief Boden ’s permutation in Chicago Fire time of year 13 , and the new mould penis is the utter choice for the adjective serial .
1Eamonn Walker As Wallace Boden
One Chicago ’s 2024 season featured many grievous exits , but none of them could hold a candle toChief Wallace Boden ’s departure fromChicago Fireduring the season 12 close . Eamonn Walker , who played Boden in the NBC procedural drama , had been a series veritable since the pilot film episode . The thespian appeared in all 12 seasons and almost all 252 sequence ofChicago Fire , but his position on the show has come to a close ahead of the season 13 premiere .
Boden has led the firefighters and paramedics of Firehouse 51 as the chief in care of Battalion 25since the beginning . His counsel and leadership have been a fundamental part ofChicago Fire ’s story and other characters ' maturation over the course of the adjective dramatic event ’s impressive campaign on NBC . It ’s difficult to put into Logos how significant Boden was for the show , but he will be affectionately omit when the 2024–2025 season arrive .
While Eamonn Walker is n’t returning as a series unconstipated forChicago Fireseason 13 , some account take that the room access is open for him to sporadically reprise his role as Boden .
Boden ’s exculpation for departure add up during the time of year 12 conclusion when he thresh his name into the unravel tobecome the Chicago Fire Department ’s Deputy Commissioner . Walker ’s theatrical role was afraid that the influential job would fall into the wrong hired man . So , Boden practice and formally became the Deputy Commissioner when offered the stead . While the promotional material was quite exciting , it was semisweet as it intend that Boden had to say goodbye to his syndicate at Firehouse 51 . Now , Dermot Mulroney ’s Dom Pascal will replace Boden as the chief inChicago Fireseason 13and Walker wo n’t be a series regular .
germinate by Derek Haas and Michael Brandt , One Chicago is a multi - series television franchise that combines various public service / government organizations in Chicago , Illinois . Each series shares a timeline and population , with multiple character crossing over once in a while . The One Chicago universe began with Chicago Fire in 2012 , with P.D. , Med , and Justice comprise the balance of one of NBC ’s most successful primetime franchises .
