4x1 Swimming
29 November 2017
Nick and Ben decide to take down Elise to avenge the brutal murder of Nick's sister. Also, Nick is first on the site of a horrific event with numerous casualties, plus Ben and Audrey get swept up in a tragic accident.
4x2 Driveby
29 November 2017
With the investigation of Elise Roberge over, Ben volunteers for surveillance duty; Ben and Audrey face the consequences of their accident; the squad ends up in the middle of a growing gang war.
4x3 Fishbowl
06 December 2017
Ben's actions bring repercussions; in pursuit of justice, Ben and Nick encounter a person they thought they'd never see again; a new officer joins 19; the squad finds out something disturbing about one of their own.
4x4 Labour Day
06 December 2017
The squad escapes to a cottage for the weekend, where alcohol and the intimate setting lead to conflict.
4x5 Flowers
13 December 2017
The patrollers of 19 struggle to find their footing. Nick realizes what he wants. Dulac loses control.
4x6 Sons
13 December 2017
Ben faces consequences; Nick's new romance gets complicated; Dulac crosses a line; Audrey thinks about the future.
4x7 Wake
20 December 2017
Ben's troubles become public; Nick faces a crisis; Dulac gets in over his head.
4x8 Tomorrow
20 December 2017
Series Finale. The squad works during a full moon; Suarez and Beatrice receive unexpected news; the squad works to prevent a tragedy.