Season 31 aired between 08 Jan 2013 and 26 Nov 2013, 19 episodes.
Episodes
E01
The Education of Michelle Rhee
08 Jan 2013
E02
Inside Obama's Presidency
15 Jan 2013
E03
The Untouchables
22 Jan 2013
E04
Cliffhanger
12 Feb 2013
E05
Newtown Divided / Raising Adam Lanza
19 Feb 2013
E06
Kind Hearted Woman
01 Apr 2013
E07
Syria Behind the Lines
09 Apr 2013
E08
The Retirement Gamble
23 Apr 2013
E09
Never Forget to Lie
14 May 2013
E10
Outlawed in Pakistan
28 May 2013
E11
Rape in the Fields
25 Jun 2013
E12
Two American Families
09 Jul 2013
E13
Life and Death in Assisted Living
30 Jul 2013
E14
Egypt in Crisis
17 Sep 2013
E15
League of Denial: The NFL's Concussion Crisis
08 Oct 2013
E16
Hunting the Nightmare Bacteria
22 Oct 2013
E17
Who Was Lee Harvey Oswald?
19 Nov 2013
E18
A Death in St. Augustine
26 Nov 2013
E19
Kind Hearted Woman (2)
02 Apr 2013