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 Alison Steadman Kendall Malone Guest Star James Frain Ferdinand Chevalier Guest Star Ksenia Solo Shay Davydov Guest Star Tom McCamus Dr. Nealon Guest Star Zoé De Grand Maison Gracie Johanssen Guest Star Josh Vokey Scott Guest Star Kyra Harper Dr. Virginia Coady Guest Star Nigel Bennett Kassov Guest Star Tom Barnett David Benchman Guest Star Ivan Schneeberg Executive Producer David Fortier Executive Producer