Season 4
Season 4 of the drama will see leader-of-the-pack, Sarah, reluctantly return home from her Icelandic hideout to track down an elusive and mysterious ally tied to the clone who started it all - Beth Childs. Sarah will follow Beth’s footsteps into a dangerous relationship with a potent new enemy, heading in a horrifying new direction. Under constant pressure to protect the sisterhood and keep everyone safe, Sarah's old habits begin to resurface. As the close-knit sisters are pulled in disparate directions, Sarah finds herself estranged from the loving relationships that changed her for the better.
Episodes
1 The Collapse of Nature Apr 14, 2016 
2 Transgressive Border Crossing Apr 21, 2016 
3 The Stigmata of Progress Apr 28, 2016 
4 From Instinct to Rational Control May 5, 2016 
5 Human Raw Material May 12, 2016 
6 The Scandal of Altruism May 19, 2016 
7 The Antisocialism of Sex May 26, 2016 
8 The Redesign of Natural Objects Jun 2, 2016 
9 The Mitigation of Competition Jun 9, 2016 
10 From Dancing Mice to Psychopaths Jun 16, 2016