S08E07: Instinct
After a series of deadly ambushes, the team goes undercover to bring down a dangerous new drug dealer who is determined to push out the competition. Ruzek's informant proves to be a loose cannon that could upset the whole operation.
Previous Episode 
Season 1
Stepping Stone
S1E1 / 08 Jan 2014
Wrong Side of the Bars
S1E2 / 15 Jan 2014
Chin Check
S1E3 / 22 Jan 2014
Now Is Always Temporary
S1E4 / 29 Jan 2014
Thirty Balloons
S1E5 / 05 Feb 2014
Conventions (II)
S1E6 / 26 Feb 2014
The Price We Pay
S1E7 / 05 Mar 2014
Different Mistakes
S1E8 / 12 Mar 2014
A Material Witness
S1E9 / 19 Mar 2014
At Least It's Justice
S1E10 / 02 Apr 2014
Turn the Light Off
S1E11 / 09 Apr 2014
8:30 PM (II)
S1E12 / 30 Apr 2014
My Way
S1E13 / 07 May 2014
The Docks
S1E14 / 14 May 2014
A Beautiful Friendship
S1E15 / 21 May 2014
Season 2
Call It Macaroni
S2E1 / 24 Sep 2014
Get My Cigarettes
S2E2 / 01 Oct 2014
The Weigh Station
S2E3 / 08 Oct 2014
Chicken, Dynamite, Chainsaw
S2E4 / 15 Oct 2014
An Honest Woman
S2E5 / 22 Oct 2014
Prison Ball
S2E6 / 05 Nov 2014
They'll Have to Go Through Me (III)
S2E7 / 12 Nov 2014
Assignment of the Year
S2E8 / 19 Nov 2014
Called In Dead (1)
S2E9 / 10 Dec 2014
Shouldn't Have Been Alone (2)
S2E10 / 07 Jan 2015
We Don't Work Together Anymore
S2E11 / 14 Jan 2015
Disco Bob
S2E12 / 21 Jan 2015
A Little Devil Complex (II)
S2E13 / 04 Feb 2015
Erin's Mom
S2E14 / 11 Feb 2015
What Do You Do
S2E15 / 18 Feb 2015
What Puts You on That Ledge
S2E16 / 25 Feb 2015
Say Her Real Name
S2E17 / 25 Mar 2015
Get Back to Even
S2E18 / 01 Apr 2015
The Three Gs
S2E19 / 08 Apr 2015
The Number of Rats (II)
S2E20 / 29 Apr 2015
There's My Girl
S2E21 / 06 May 2015
Push the Pain Away
S2E22 / 13 May 2015
Born Into Bad News
S2E23 / 20 May 2015
Season 3
Life Is Fluid
S3E1 / 30 Sep 2015
Natural Born Storyteller
S3E2 / 07 Oct 2015
Actual Physical Violence
S3E3 / 14 Oct 2015
Debts of the Past
S3E4 / 21 Oct 2015
Climbing into Bed (1)
S3E5 / 28 Oct 2015
You Never Know Who's Who (2)
S3E6 / 28 Oct 2015
A Dead Kid, a Notebook and a Lot of Maybes
S3E7 / 04 Nov 2015
Forget My Name
S3E8 / 11 Nov 2015
Never Forget I Love You
S3E9 / 18 Nov 2015
Now I'm God (III)
S3E10 / 06 Jan 2016
Knocked the Family Right Out
S3E11 / 13 Jan 2016
Looking Out for Stateville
S3E12 / 20 Jan 2016
Hit Me
S3E13 / 03 Feb 2016
The Song of Gregory Williams Yates (II)
S3E14 / 10 Feb 2016
A Night Owl
S3E15 / 17 Feb 2016
The Cases That Need to Be Solved
S3E16 / 24 Feb 2016
Forty-Caliber Bread Crumb
S3E17 / 02 Mar 2016
Kasual with a K
S3E18 / 23 Mar 2016
If We Were Normal
S3E19 / 30 Mar 2016
In a Duffel Bag
S3E20 / 04 May 2016
Justice
S3E21 / 11 May 2016
She's Got Us
S3E22 / 18 May 2016
Start Digging
S3E23 / 25 May 2016
Season 4
The Silos
S4E1 / 21 Sep 2016
Made a Wrong Turn
S4E2 / 28 Sep 2016
All Cylinders Firing
S4E3 / 05 Oct 2016
Big Friends Big Enemies
S4E4 / 12 Oct 2016
A War Zone
S4E5 / 26 Oct 2016
Some Friend
S4E6 / 09 Nov 2016
300,000 Likes
S4E7 / 16 Nov 2016
A Shot Heard Round the World
S4E8 / 16 Nov 2016
Don't Bury This Case (II)
S4E9 / 03 Jan 2017
Don't Read the News
S4E10 / 04 Jan 2017
You Wish
S4E11 / 11 Jan 2017
Sanctuary
S4E12 / 18 Jan 2017
I Remember Her Now
S4E13 / 08 Feb 2017
Seven Indictments
S4E14 / 15 Feb 2017
Favor, Affection, Malice or Ill-Will
S4E15 / 22 Feb 2017
Emotional Proximity (II)
S4E16 / 01 Mar 2017
Remember the Devil
S4E17 / 22 Mar 2017
Little Bit of Light
S4E18 / 29 Mar 2017
Last Minute Resistance
S4E19 / 05 Apr 2017
Grasping for Salvation
S4E20 / 26 Apr 2017
Fagin
S4E21 / 03 May 2017
Army of One
S4E22 / 10 May 2017
Fork in the Road
S4E23 / 17 May 2017
Season 5
Reform
S5E1 / 27 Sep 2017
The Thing About Heroes
S5E2 / 04 Oct 2017
Promise
S5E3 / 11 Oct 2017
Snitch
S5E4 / 18 Oct 2017
Home
S5E5 / 25 Oct 2017
Fallen
S5E6 / 08 Nov 2017
Care Under Fire
S5E7 / 15 Nov 2017
Politics
S5E8 / 29 Nov 2017
Monster
S5E9 / 06 Dec 2017
Rabbit Hole
S5E10 / 03 Jan 2018
Confidential
S5E11 / 10 Jan 2018
Captive
S5E12 / 17 Jan 2018
Chasing Monsters
S5E13 / 31 Jan 2018
Anthem
S5E14 / 07 Feb 2018
Sisterhood
S5E15 / 28 Feb 2018
Profiles (I)
S5E16 / 07 Mar 2018
Breaking Point
S5E17 / 14 Mar 2018
Ghosts
S5E18 / 21 Mar 2018
Payback
S5E19 / 11 Apr 2018
Saved
S5E20 / 18 Apr 2018
Allegiance
S5E21 / 02 May 2018
Homecoming
S5E22 / 09 May 2018
Season 6
New Normal
S6E1 / 26 Sep 2018
Endings (III)
S6E2 / 03 Oct 2018
Bad Boys
S6E3 / 10 Oct 2018
Ride Along
S6E4 / 17 Oct 2018
Fathers and Sons
S6E5 / 24 Oct 2018
True or False
S6E6 / 31 Oct 2018
Trigger
S6E7 / 07 Nov 2018
Black and Blue
S6E8 / 14 Nov 2018
Descent
S6E9 / 05 Dec 2018
Brotherhood
S6E10 / 09 Jan 2019
Trust
S6E11 / 16 Jan 2019
Outrage
S6E12 / 23 Jan 2019
Night in Chicago
S6E13 / 06 Feb 2019
Ties That Bind
S6E14 / 13 Feb 2019
Good Men (II)
S6E15 / 20 Feb 2019
The Forgotten
S6E16 / 27 Feb 2019
Pain Killer
S6E17 / 27 Mar 2019
This City
S6E18 / 03 Apr 2019
What Could Have Been
S6E19 / 24 Apr 2019
Sacrifice
S6E20 / 08 May 2019
Confession
S6E21 / 15 May 2019
Reckoning
S6E22 / 22 May 2019
Season 7
Doubt
S7E1 / 25 Sep 2019
Assets
S7E2 / 02 Oct 2019
Familia
S7E3 / 09 Oct 2019
Infection, Part III (III)
S7E4 / 16 Oct 2019
Brother's Keeper
S7E5 / 23 Oct 2019
False Positive
S7E6 / 30 Oct 2019
Informant
S7E7 / 06 Nov 2019
No Regrets
S7E8 / 13 Nov 2019
Absolution
S7E9 / 20 Nov 2019
Mercy
S7E10 / 08 Jan 2020
43rd and Normal
S7E11 / 15 Jan 2020
The Devil You Know
S7E12 / 22 Jan 2020
I Was Here
S7E13 / 05 Feb 2020
Center Mass
S7E14 / 12 Feb 2020
Burden of Truth (II)
S7E15 / 26 Feb 2020
Intimate Violence
S7E16 / 04 Mar 2020
Before the Fall
S7E17 / 18 Mar 2020
Lines
S7E18 / 25 Mar 2020
Buried Secrets
S7E19 / 08 Apr 2020
Silence of the Night
S7E20 / 15 Apr 2020
Season 8
Fighting Ghosts
S8E1 / 11 Nov 2020
White Knuckle
S8E2 / 18 Nov 2020
Tender Age
S8E3 / 13 Jan 2021
Unforgiven
S8E4 / 27 Jan 2021
In Your Care
S8E5 / 03 Feb 2021
Equal Justice
S8E6 / 10 Feb 2021
Instinct
S8E7 / 17 Feb 2021
Protect and Serve
S8E8 / 10 Mar 2021
Impossible Dream
S8E9 / 17 Mar 2021
The Radical Truth
S8E10 / 31 Mar 2021
Signs of Violence
S8E11 / 07 Apr 2021
Due Process
S8E12 / 21 Apr 2021
Trouble Dolls
S8E13 / 05 May 2021
Safe
S8E14 / 12 May 2021
The Right Thing (1)
S8E15 / 19 May 2021
The Other Side (2)
S8E16 / 26 May 2021
Season 9
Closure
S9E1 / 22 Sep 2021
Rage
S9E2 / 29 Sep 2021
The One Next to Me
S9E3 / 06 Oct 2021
In the Dark
S9E4 / 13 Oct 2021
Burnside
S9E5 / 20 Oct 2021
End of Watch
S9E6 / 27 Oct 2021
Trust Me
S9E7 / 03 Nov 2021
Fractures
S9E8 / 10 Nov 2021
A Way Out
S9E9 / 08 Dec 2021
Home Safe
S9E10 / 05 Jan 2022
Lies
S9E11 / 12 Jan 2022
To Protect
S9E12 / 19 Jan 2022
Still Water
S9E13 / 23 Feb 2022
Blood Relation
S9E14 / 02 Mar 2022
Gone
S9E15 / 09 Mar 2022
Closer
S9E16 / 16 Mar 2022
Adrift
S9E17 / 06 Apr 2022
New Guard
S9E18 / 13 Apr 2022
Fool's Gold
S9E19 / 20 Apr 2022
Memory
S9E20 / 11 May 2022
House of Cards (1)
S9E21 / 18 May 2022
You and Me (2)
S9E22 / 25 May 2022
Season 10
Let It Bleed
S10E1 / 21 Sep 2022
The Real You
S10E2 / 28 Sep 2022
A Good Man
S10E3 / 05 Oct 2022
Dónde Vives
S10E4 / 12 Oct 2022
Pink Cloud
S10E5 / 19 Oct 2022
Sympathetic Reflex
S10E6 / 02 Nov 2022
Into the Deep
S10E7 / 09 Nov 2022
Under the Skin
S10E8 / 16 Nov 2022
Proof of Burden
S10E9 / 07 Dec 2022
This Job
S10E10 / 04 Jan 2023
Long Lost
S10E11 / 11 Jan 2023
I Can Let You Go
S10E12 / 18 Jan 2023
The Ghost in You
S10E13 / 15 Feb 2023
Trapped
S10E14 / 22 Feb 2023
Blood and Honor
S10E15 / 01 Mar 2023
Deadlocked
S10E16 / 22 Mar 2023
Out of the Depths
S10E17 / 29 Mar 2023
You Only Die Twice
S10E18 / 05 Apr 2023
The Bleed Valve
S10E19 / 03 May 2023
Fight
S10E20 / 10 May 2023
New Life
S10E21 / 17 May 2023
A Better Place
S10E22 / 24 May 2023
Season 11
Unpacking
S11E1 / 17 Jan 2024
Retread
S11E2 / 24 Jan 2024
Safe Harbor
S11E3 / 31 Jan 2024
Escape
S11E4 / 07 Feb 2024
Split Second
S11E5 / 21 Feb 2024
Survival
S11E6 / 28 Feb 2024
The Living and the Dead
S11E7 / 20 Mar 2024
On Paper
S11E8 / 27 Mar 2024
Somos Uno
S11E9 / 03 Apr 2024
Buried Pieces
S11E10 / 01 May 2024
The Water Line
S11E11 / 08 May 2024
Inventory
S11E12 / 15 May 2024
More
S11E13 / 22 May 2024
Season 12
Ten Ninety-Nine (1)
S12E1 / 25 Sep 2024
Blood Bleeds Blue (2)
S12E2 / 02 Oct 2024
Off Switch
S12E3 / 09 Oct 2024
The After
S12E4 / 16 Oct 2024
Water and Honey
S12E5 / 23 Oct 2024
Pawns
S12E6 / 06 Nov 2024
Contrition (1)
S12E7 / 13 Nov 2024
Penance (2)
S12E8 / 20 Nov 2024
Friends and Family
S12E9 / 08 Jan 2025
Zoe
S12E10 / 22 Jan 2025
In the Trenches (III)
S12E11 / 29 Jan 2025
The Good Shepherd
S12E12 / 05 Feb 2025
Street Jesus
S12E13 / 19 Feb 2025
Marie
S12E14 / 26 Feb 2025
Greater Good
S12E15 / 05 Mar 2025
Seen and Unseen
S12E16 / 26 Mar 2025
Transference
S12E17 / 02 Apr 2025
Demons
S12E18 / 16 Apr 2025
Name Image Likeness
S12E19 / 23 Apr 2025
Black Ice
S12E20 / 07 May 2025
Open Casket
S12E21 / 14 May 2025
Vows
S12E22 / 21 May 2025
Season 13
Consequences
S13E1 / 01 Oct 2025
Open Wounds
S13E2 / 08 Oct 2025
Canaryville
S13E3 / 15 Oct 2025
Root Cause
S13E4 / 22 Oct 2025
Miami
S13E5 / 29 Oct 2025
Send Me
S13E6 / 05 Nov 2025
Impulse Control
S13E7 / 12 Nov 2025
Born Screaming
S13E8 / 07 Jan 2026
Heroes
S13E9 / 14 Jan 2026
Faith
S13E10 / 21 Jan 2026
On the Way
S13E11 / 28 Jan 2026
Missing
S13E12 / 04 Feb 2026
Reckoning (III)
S13E13 / 04 Mar 2026
Meant to Be
S13E14 / 11 Mar 2026
Jason Beghe
Hank Voight
Marina Squerciati
Kim Burgess
Patrick John Flueger
Adam Ruzek
LaRoyce Hawkins
Kevin Atwater
Benjamin Levy Aguilar
Dante Torres
Arienne Mandi
Eva Imani
