Season 4 aired between 25 Sep 2012 and 14 May 2013, 24 episodes.
Episodes
E01
Endgame
25 Sep 2012
E02
Recruit
02 Oct 2012
E03
The Fifth Man
09 Oct 2012
E04
Dead Body Politic
23 Oct 2012
E05
Out of the Past (1)
30 Oct 2012
E06
Rude Awakenings (2)
13 Nov 2012
E07
Skin Deep
20 Nov 2012
E08
Collateral
27 Nov 2012
E09
The Gold Standard
11 Dec 2012
E10
Free Ride
18 Dec 2012
E11
Drive
08 Jan 2013
E12
Paper Soldiers
15 Jan 2013
E13
The Chosen One
29 Jan 2013
E14
Kill House
05 Feb 2013
E15
History
19 Feb 2013
E16
Lokhay
26 Feb 2013
E17
Wanted
05 Mar 2013
E18
Red (1)
19 Mar 2013
E19
Red (2)
26 Mar 2013
E20
Purity
09 Apr 2013
E21
Resurrection
23 Apr 2013
E22
Raven & the Swans
30 Apr 2013
E23
Parley
07 May 2013
E24
Descent (1)
14 May 2013