SEASON 15 · EPISODE SCHEDULE

EPISODE 1
October 7, 2026
9:00 PM ET

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EPISODE 2
October 14, 2026
9:00 PM ET

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EPISODE 3
October 21, 2026
9:00 PM ET

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EPISODE 4
October 28, 2026
9:00 PM ET

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EPISODE 5
November 4, 2026
9:00 PM ET

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EPISODE 6
November 11, 2026
9:00 PM ET

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All release dates are shown in Eastern time · NBC

SEASON 14 21 episodes · 2025

Episode 1: Kicking Down DoorsOctober 1, 2025
Episode 2: Primary SearchOctober 8, 2025
Episode 3: In the BloodOctober 15, 2025
Episode 4: MercyOctober 22, 2025
Episode 5: GhostsOctober 29, 2025
Episode 6: Broken ThingsNovember 5, 2025
Episode 7: Pierce the VeinNovember 12, 2025
Episode 8: A Man PossessedJanuary 7, 2026
Episode 9: Crime of PassionJanuary 14, 2026
Episode 10: Carry a TorchJanuary 21, 2026
Episode 11: Frostbite BlueJanuary 28, 2026
Episode 12: Coming in HotFebruary 4, 2026
Episode 13: Reckoning, Part IMarch 4, 2026
Episode 14: Hit and RunMarch 11, 2026
Episode 15: Do Not ResuscitateMarch 18, 2026
Episode 16: Firehouse 66April 1, 2026
Episode 17: SwayApril 8, 2026
Episode 18: InstinctApril 22, 2026
Episode 19: Exit PointApril 29, 2026
Episode 20: Speak of the DevilMay 6, 2026
Episode 21: Thank YouMay 13, 2026

SEASON 13 22 episodes · 2024

Episode 1: A Monster in the FieldSeptember 25, 2024
Episode 2: Ride the BladeOctober 2, 2024
Episode 3: All Kinds of CrazyOctober 9, 2024
Episode 4: Through the SkinOctober 16, 2024
Episode 5: Down the Rabbit HoleOctober 23, 2024
Episode 6: Birds of PreyNovember 6, 2024
Episode 7: UntouchableNovember 13, 2024
Episode 8: QuickstandNovember 20, 2024
Episode 9: A FavorJanuary 8, 2025
Episode 10: Chaos TheoryJanuary 22, 2025
Episode 11: In the Trenches: Part IJanuary 29, 2025
Episode 12: Relief CutFebruary 5, 2025
Episode 13: Born of FireFebruary 19, 2025
Episode 14: Bar TimeFebruary 26, 2025
Episode 15: Too CloseMarch 5, 2025
Episode 16: In the RubbleMarch 26, 2025
Episode 17: A Beast Like ThisApril 2, 2025
Episode 18: Post-MortemApril 16, 2025
Episode 19: Permanent DamageApril 23, 2025
Episode 20: Cut Me OpenMay 7, 2025
Episode 21: The Bad GuyMay 14, 2025
Episode 22: It Had to End This WayMay 21, 2025

SEASON 12 13 episodes · 2024

Episode 1: Barely GoneJanuary 17, 2024
Episode 2: Call Me McHollandJanuary 24, 2024
Episode 3: TrappedJanuary 31, 2024
Episode 4: The Little ThingsFebruary 7, 2024
Episode 5: On the HookFebruary 21, 2024
Episode 6: Port in the StormFebruary 28, 2024
Episode 7: Red FlagMarch 20, 2024
Episode 8: All the DarkMarch 27, 2024
Episode 9: Something About HerApril 3, 2024
Episode 10: The Wrong GuyMay 1, 2024
Episode 11: Inside ManMay 8, 2024
Episode 12: Under PressureMay 15, 2024
Episode 13: Never Say GoodbyeMay 22, 2024

SEASON 11 22 episodes · 2022

Episode 1: Hold on TightSeptember 21, 2022
Episode 2: Every Scar Tells a StorySeptember 28, 2022
Episode 3: Completely ShatteredOctober 5, 2022
Episode 4: The Center of the UniverseOctober 12, 2022
Episode 5: Haunted HouseOctober 19, 2022
Episode 6: All-Out MysteryNovember 2, 2022
Episode 7: Angry Is EasierNovember 9, 2022
Episode 8: A Beautiful LifeNovember 16, 2022
Episode 9: NemesisDecember 7, 2022
Episode 10: Something for the PainJanuary 4, 2023
Episode 11: A Guy I Used to KnowJanuary 11, 2023
Episode 12: How Does It End?January 18, 2023
Episode 13: The Man of the MomentFebruary 15, 2023
Episode 14: Run Like HellFebruary 22, 2023
Episode 15: Damage ControlMarch 1, 2023
Episode 16: Acting UpMarch 22, 2023
Episode 17: The First SymptomMarch 29, 2023
Episode 18: Danger Is All AroundApril 5, 2023
Episode 19: Take a Shot at the KingMay 3, 2023
Episode 20: Never, Ever Make a MistakeMay 10, 2023
Episode 21: Change of PlansMay 17, 2023
Episode 22: Red WaterfallMay 24, 2023

SEASON 10 22 episodes · 2021

Episode 1: MaydaySeptember 22, 2021
Episode 2: Head CountSeptember 29, 2021
Episode 3: Counting Your BreathsOctober 6, 2021
Episode 4: The Right ThingOctober 13, 2021
Episode 5: Two HundredOctober 20, 2021
Episode 6: Dead ZoneOctober 27, 2021
Episode 7: Whom Shall I Fear?November 3, 2021
Episode 8: What Happened at Whiskey Point?November 10, 2021
Episode 9: WinterfestDecember 8, 2021
Episode 10: Back With a BangJanuary 5, 2022
Episode 11: Fog of WarJanuary 12, 2022
Episode 12: Show of ForceJanuary 19, 2022
Episode 13: Fire CopFebruary 23, 2022
Episode 14: An Officer with GritMarch 2, 2022
Episode 15: The Missing PieceMarch 9, 2022
Episode 16: Hot and FastMarch 16, 2022
Episode 17: Keep You SafeApril 6, 2022
Episode 18: What's Inside YouApril 13, 2022
Episode 19: Finish What You StartedApril 20, 2022
Episode 20: Halfway to the MoonMay 11, 2022
Episode 21: Last ChanceMay 18, 2022
Episode 22: The Magnificent City of ChicagoMay 25, 2022

SEASON 9 16 episodes · 2020

Episode 1: Rattle Second CityNovember 11, 2020
Episode 2: That Kind of HeatNovember 18, 2020
Episode 3: Smash TherapyJanuary 13, 2021
Episode 4: Funny What Things Remind UsJanuary 27, 2021
Episode 5: My Lucky DayFebruary 3, 2021
Episode 6: Blow This Up SomehowFebruary 10, 2021
Episode 7: Dead of WinterFebruary 17, 2021
Episode 8: Escape RouteMarch 10, 2021
Episode 9: Double RedMarch 17, 2021
Episode 10: One Crazy ShiftMarch 31, 2021
Episode 11: A Couple Hundred DegreesApril 7, 2021
Episode 12: Natural Born FirefighterApril 21, 2021
Episode 13: Don't Hang UpMay 5, 2021
Episode 14: What Comes NextMay 12, 2021
Episode 15: A White-Knuckle PanicMay 19, 2021
Episode 16: No SurvivorsMay 26, 2021

SEASON 8 20 episodes · 2019

Episode 1: Sacred GroundSeptember 25, 2019
Episode 2: A Real Shot in the ArmOctober 2, 2019
Episode 3: BadlandsOctober 9, 2019
Episode 4: Infection, Part IOctober 16, 2019
Episode 5: Buckle UpOctober 23, 2019
Episode 6: What Went WrongOctober 30, 2019
Episode 7: Welcome to CrazytownNovember 6, 2019
Episode 8: Seeing Is BelievingNovember 13, 2019
Episode 9: Best Friend MagicNovember 20, 2019
Episode 10: Hold Our GroundJanuary 8, 2020
Episode 11: Where We End UpJanuary 15, 2020
Episode 12: Then Nick Porter HappenedJanuary 22, 2020
Episode 13: A Chicago WelcomeFebruary 5, 2020
Episode 14: Shut It DownFebruary 12, 2020
Episode 15: Off the GridFebruary 26, 2020
Episode 16: The Tendency of a Drowning VictimMarch 4, 2020
Episode 17: Protect a ChildMarch 18, 2020
Episode 18: I'll Cover YouMarch 25, 2020
Episode 19: Light Things UpApril 8, 2020
Episode 20: 51's Original BellApril 15, 2020

SEASON 7 22 episodes · 2018

Episode 1: A Closer EyeSeptember 26, 2018
Episode 2: Going to WarOctober 3, 2018
Episode 3: Thirty Percent Sleight of HandOctober 10, 2018
Episode 4: This Isn't CharityOctober 17, 2018
Episode 5: A Volatile MixtureOctober 24, 2018
Episode 6: All the ProofOctober 31, 2018
Episode 7: What Will Define YouNovember 7, 2018
Episode 8: The Solution to EverythingNovember 14, 2018
Episode 9: Always a CatchDecember 5, 2018
Episode 10: Inside These WallsJanuary 9, 2019
Episode 11: You ChooseJanuary 16, 2019
Episode 12: Make This RightJanuary 23, 2019
Episode 13: The PlungeFebruary 6, 2019
Episode 14: It Wasn't About HockeyFebruary 13, 2019
Episode 15: What I SawFebruary 20, 2019
Episode 16: Fault in HimFebruary 27, 2019
Episode 17: Move a WallMarch 27, 2019
Episode 18: No Such Thing as Bad LuckApril 3, 2019
Episode 19: Until the Weather BreaksApril 24, 2019
Episode 20: Try Like HellMay 8, 2019
Episode 21: The White WhaleMay 15, 2019
Episode 22: I'm Not Leaving YouMay 22, 2019

SEASON 6 23 episodes · 2017

Episode 1: It Wasn't EnoughSeptember 28, 2017
Episode 2: Ignite on ContactOctober 5, 2017
Episode 3: An Even Bigger SurpriseOctober 12, 2017
Episode 4: A Breaking PointOctober 19, 2017
Episode 5: Devil's BargainOctober 26, 2017
Episode 6: Down is BetterNovember 2, 2017
Episode 7: A Man's LegacyJanuary 4, 2018
Episode 8: The Whole Point of Being RoommatesJanuary 11, 2018
Episode 9: Foul is FairJanuary 18, 2018
Episode 10: SlamiganJanuary 25, 2018
Episode 11: Law of the JungleFebruary 1, 2018
Episode 12: The F is ForMarch 1, 2018
Episode 13: Hiding Not SeekingMarch 8, 2018
Episode 14: Looking for a LifelineMarch 22, 2018
Episode 15: The Chance to ForgiveMarch 22, 2018
Episode 16: The One That Matters MostMarch 29, 2018
Episode 17: Put White on MeApril 5, 2018
Episode 18: When They See Us ComingApril 12, 2018
Episode 19: Where I Want to BeApril 19, 2018
Episode 20: The Strongest Among UsApril 26, 2018
Episode 21: The Unrivaled StandardMay 3, 2018
Episode 22: One for the AgesMay 10, 2018
Episode 23: The Grand GestureMay 10, 2018

SEASON 5 22 episodes · 2016

Episode 1: The Hose or the AnimalOctober 11, 2016
Episode 2: A Real Wake-Up CallOctober 18, 2016
Episode 3: Scorched EarthOctober 25, 2016
Episode 4: Nobody Else is Dying TodayNovember 1, 2016
Episode 5: I Held Her HandNovember 15, 2016
Episode 6: That DayNovember 22, 2016
Episode 7: Lift Each OtherNovember 29, 2016
Episode 8: One HundredDecember 6, 2016
Episode 9: Some Make It, Some Don'tJanuary 3, 2017
Episode 10: The People We MeetJanuary 17, 2017
Episode 11: Who Lives and Who DiesJanuary 24, 2017
Episode 12: An Agent of the MachineFebruary 7, 2017
Episode 13: Trading in ScuttlebuttFebruary 14, 2017
Episode 14: PurgatoryFebruary 21, 2017
Episode 15: DeathtrapMarch 1, 2017
Episode 16: Telling Her GoodbyeMarch 21, 2017
Episode 17: Babies and FoolsMarch 28, 2017
Episode 18: Take a KneeApril 4, 2017
Episode 19: Carry Their LegacyApril 25, 2017
Episode 20: Carry MeMay 2, 2017
Episode 21: Sixty DaysMay 9, 2017
Episode 22: My MiracleMay 16, 2017

SEASON 4 23 episodes · 2015

Episode 1: Let It BurnOctober 13, 2015
Episode 2: A Taste of Panama CityOctober 20, 2015
Episode 3: I Walk AwayOctober 27, 2015
Episode 4: Your Day is ComingNovember 3, 2015
Episode 5: Regarding This WeddingNovember 10, 2015
Episode 6: 2112November 17, 2015
Episode 7: Sharp ElbowsNovember 24, 2015
Episode 8: When Tortoises FlyDecember 1, 2015
Episode 9: Short and FatDecember 8, 2015
Episode 10: The Beating HeartJanuary 5, 2016
Episode 11: The Path of DestructionJanuary 19, 2016
Episode 12: Not Everyone Makes ItJanuary 26, 2016
Episode 13: The Sky is FallingFebruary 2, 2016
Episode 14: All Hard PartsFebruary 9, 2016
Episode 15: Bad for the SoulFebruary 16, 2016
Episode 16: Two T'sFebruary 23, 2016
Episode 17: What Happened to CourtneyMarch 29, 2016
Episode 18: On the WarpathApril 5, 2016
Episode 19: I Will Be WalkingApril 19, 2016
Episode 20: The Last One for MomApril 26, 2016
Episode 21: Kind of a Crazy IdeaMay 3, 2016
Episode 22: Where the Collapse StartedMay 10, 2016
Episode 23: SuperheroMay 17, 2016

SEASON 3 23 episodes · 2014

Episode 1: AlwaysSeptember 23, 2014
Episode 2: Wow MeSeptember 30, 2014
Episode 3: Just Drive the TruckOctober 7, 2014
Episode 4: Apologies Are DangerousOctober 14, 2014
Episode 5: The Nuclear OptionOctober 21, 2014
Episode 6: Madmen and FoolsOctober 28, 2014
Episode 7: Nobody Touches AnythingNovember 11, 2014
Episode 8: ChopperNovember 18, 2014
Episode 9: Arrest in TransitNovember 25, 2014
Episode 10: Santa BitesDecember 2, 2014
Episode 11: Let Him DieJanuary 6, 2015
Episode 12: Ambush PredatorJanuary 13, 2015
Episode 13: Three BellsFebruary 3, 2015
Episode 14: Call It ParadiseFebruary 10, 2015
Episode 15: Headlong Toward DisasterFebruary 17, 2015
Episode 16: Red Rag the BullMarch 3, 2015
Episode 17: Forgive You AnythingMarch 10, 2015
Episode 18: Forgiving, Relentless, UnconditionalMarch 17, 2015
Episode 19: I Am the ApocalypseApril 7, 2015
Episode 20: You Know Where to Find MeApril 21, 2015
Episode 21: We Called Her JellybeanApril 28, 2015
Episode 22: Category 5May 5, 2015
Episode 23: SpartacusMay 12, 2015

SEASON 2 22 episodes · 2013

Episode 1: A Problem HouseSeptember 24, 2013
Episode 2: Prove ItOctober 1, 2013
Episode 3: Defcon 1October 8, 2013
Episode 4: A Nuisance CallOctober 15, 2013
Episode 5: A Power MoveOctober 22, 2013
Episode 6: JoyridingNovember 12, 2013
Episode 7: No RegretsNovember 19, 2013
Episode 8: Rhymes with ShoutNovember 26, 2013
Episode 9: You Will Hurt HimDecember 3, 2013
Episode 10: Not Like ThisDecember 10, 2013
Episode 11: Shoved in My FaceJanuary 7, 2014
Episode 12: Out with a BangJanuary 14, 2014
Episode 13: Tonight's the NightJanuary 21, 2014
Episode 14: Virgin SkinFebruary 25, 2014
Episode 15: Keep Your Mouth ShutMarch 4, 2014
Episode 16: A Rocket Blasting OffMarch 11, 2014
Episode 17: When Things Got RoughMarch 18, 2014
Episode 18: Until Your Feet Leave the GroundApril 8, 2014
Episode 19: A Heavy WeightApril 15, 2014
Episode 20: A Dark DayApril 29, 2014
Episode 21: One More ShotMay 6, 2014
Episode 22: Real Never WaitsMay 13, 2014

SEASON 1 24 episodes · 2012

Episode 1: PilotOctober 10, 2012
Episode 2: Mon AmourOctober 17, 2012
Episode 3: Professional CourtesyOctober 24, 2012
Episode 4: One MinuteOctober 31, 2012
Episode 5: Hanging OnNovember 7, 2012
Episode 6: Rear View MirrorNovember 14, 2012
Episode 7: Two FamiliesNovember 21, 2012
Episode 8: Leaving the StationDecember 5, 2012
Episode 9: It Ain't EasyDecember 12, 2012
Episode 10: Merry Christmas, Etc.December 19, 2012
Episode 11: God Has SpokenJanuary 2, 2013
Episode 12: Under the KnifeJanuary 9, 2013
Episode 13: Warm and DeadJanuary 30, 2013
Episode 14: A Little TasteFebruary 6, 2013
Episode 15: Nazdarovya!February 13, 2013
Episode 16: ViralFebruary 20, 2013
Episode 17: Better to LieFebruary 27, 2013
Episode 18: FireworksMarch 20, 2013
Episode 19: A Coffin That SmallMarch 27, 2013
Episode 20: AmbitionApril 3, 2013
Episode 21: Retaliation HitMay 1, 2013
Episode 22: Leaders LeadMay 8, 2013
Episode 23: Let Her GoMay 15, 2013
Episode 24: A Hell of a RideMay 22, 2013

SEASON 15 · EPISODE SCHEDULE

EPISODE 1

EPISODE 2

EPISODE 3

EPISODE 4

EPISODE 5

EPISODE 6