Orphan Black - 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.

• S4 E1 - The Collapse of Nature

• S4 E2 - Transgressive Border Crossing

• S4 E3 - The Stigmata of Progress

• S4 E4 - From Instinct to Rational Control

• S4 E5 - Human Raw Material

• S4 E6 - The Scandal of Altruism

• S4 E7 - The Antisocialism of Sex

• S4 E8 - The Redesign of Natural Objects

• S4 E9 - The Mitigation of Competition

• S4 E10 - From Dancing Mice to Psychopaths