Sarah joins forces with an unlikely and untrustworthy ally, following a trail of clues that she hopes will lead her to the origins of the clone experiment. Cosima and Delphine make a discovery that could prove to be the key to treating her illness. Alison finds herself in unsavory company at rehab.
Elenco: Tatiana Maslany , Dylan Bruce , Jordan Gavaris , Kristian Bruun , Kevin Hanchard , Maria Doyle Kennedy , Évelyne Brochu , Incorrect Aspect Ratio , Inga Cadranel , Kevin Hanchard , Kristian Bruun , Maria Doyle Kennedy , Matt Frewer , Michael Mando , Michiel Huisman , Millie Davis , Natalie Lisinska , Peter Outerbridge , Ron Lea , Skyler Wexler , زينة .