Season 4 aired between 11 Nov 2020 and 26 May 2021, 18 episodes.
Episodes
E01
3 Seventeen Year Olds (1)
11 Nov 2020
E02
Stakeout (2)
11 Nov 2020
E03
The Black Hand Man
18 Nov 2020
E04
Memento Mori
25 Nov 2020
E05
Fracture
09 Dec 2020
E06
Hopeless Sinners
16 Dec 2020
E07
Under Fire
13 Jan 2021
E08
Crusade
27 Jan 2021
E09
Next of Kin
17 Feb 2021
E10
Buried
03 Mar 2021
E11
Positive Thinking
10 Mar 2021
E12
U-Turn
24 Mar 2021
E13
Sins of the Fathers
07 Apr 2021
E14
Reckoning
21 Apr 2021
E15
Local Heroes
05 May 2021
E16
Lockdown
12 May 2021
E17
Whistleblower
19 May 2021
E18
Veritas Vincint
26 May 2021