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 Justin Chatwin Jason Kellerman Guest Star Kristin Booth Bonnie Johanssen Guest Star Zoé De Grand Maison Gracie Johanssen Guest Star David Fox Jonah Appleyard Guest Star Kyra Harper Dr. Virginia Coady Guest Star Josh Vokey Scott Guest Star Kathryn Alexandre Alexis Guest Star Carlos Gonzalez-Vio Dr. Silva Guest Star Diana Salvatore Bobby Guest Star Ivan Schneeberg Executive Producer David Fortier Executive Producer