Leda and Castor hunt for the original clone DNA; Mark and Gracie pursue new leads; Art and Sarah reunite.
Cast:
Tatiana Maslany
Jordan Gavaris
Dylan Bruce
Kevin Hanchard
Evelyne Brochu
Ari Millen
Kristian Bruun
Maria Doyle Kennedy
Tom McCamus
Nicholas Campbell
Josh Vokey
Kristin Booth
Zoé De Grand Maison
Amanda Brugel
Kyra Harper