Alison's loyalty to the clones is questioned; Cosima makes a final attempt to discover a cure.
Cast:
Tatiana Maslany
Jordan Gavaris
Kevin Hanchard
Ari Millen
Kristian Bruun
Josh Vokey
Maria Doyle Kennedy
Rosemary Dunsmore
Jessalyn Wanlim
Gord Rand
Cynthia Galant
Calwyn Shurgold
Terra Hazelton