Tatiana Maslany Sarah, Beth Actor Dylan Bruce Paul Actor Jordan Gavaris Felix Actor Kevin Hanchard Art Actor Evelyne Brochu Delphine Actor Ari Millen Mark, Rudy Actor Kristian Bruun Donnie Actor Maria Doyle Kennedy Mrs. S Actor Ksenia Solo Shay Davydov Guest Star Justin Chatwin Jason Kellerman Guest Star Skyler Wexler Kira Guest Star Josh Vokey Scott Guest Star Kyra Harper Dr. Virginia Coady Guest Star Tom Barnett David Benchman Guest Star Carlos Gonzalez-Vio Dr. Silva Guest Star Ivan Schneeberg Executive Producer David Fortier Executive Producer