Sezon 4
Bölümler
1 Enter the Ferret 12 Mar 2012 2 Think Globally, Die Locally 19 Mar 2012 3 Tweets from the Dead 26 Mar 2012 4 A New App Called Death 2 Nis 2012 5 Death Certificates 15 Tem 2012 6 Crying Over Spilled Blood 15 Tem 2012 7 It's a Dead, Dead, Dead World 15 Tem 2012 8 Death, The Final Frontier 15 Tem 2012