While Alison deals with Aynsley's death, Sarah enlists Art's help to find Kira but is shocked where the trail leads.
Sarah comes home looking for answers, and with the help of Cosima, they begin digging into the origins of the clone experiment.
As Sarah hits the road with Felix and Kira, she is forced to turn to a ghost from her past.
Rachel lashes out at Sarah's nearest and dearest. While she tries to keep her loved ones safe, a surprise visitor may derail Sarah's plans.
Leda and Castor are both on the hunt for original clone DNA, while a shocking revelation about their connection leaves the sisters reeling.
