Season 39 aired between 04 Jan 2012 and 18 Nov 2012, 19 episodes.
Episodes
E01
Deadliest Volcanoes
04 Jan 2012
E02
Bombing Hitler's Dams
11 Jan 2012
E03
3D Spies of WWII
18 Jan 2012
E04
Mystery of a Masterpiece
25 Jan 2012
E05
Ice Age Death Trap
01 Feb 2012
E06
Separating Twins
08 Feb 2012
E07
Cracking Your Genetic Code
28 Mar 2012
E08
Hunting the Elements
04 Apr 2012
E09
Deadliest Tornadoes
11 Apr 2012
E10
Why Ships Sink
18 Apr 2012
E11
Secrets of the Sun
25 Apr 2012
E12
Secrets of the Viking Sword
10 Oct 2012
E13
Forensics on Trial
17 Oct 2012
E14
Mystery of Easter Island
07 Nov 2012
E15
Ultimate Mars Challenge
14 Nov 2012
E16
Inside the Megastorm
18 Nov 2012
E17
Deadliest Tornadoes
11 Apr 2012
E18
Why Ships Sink
18 Apr 2012
E19
Secrets of the Sun
25 Apr 2012