Sarah and an unlikely ally follow clues about the origins of the clone experiment; Cosima and Delphine make a discovery.
Cast:
Tatiana Maslany
Dylan Bruce
Jordan Gavaris
Kevin Hanchard
Evelyne Brochu
Maria Doyle Kennedy
Michael Mando
Patrick Adams
Kristian Bruun
Ari Millen
Zoé De Grand Maison
Inga Cadranel
Josh Vokey