Guest Stars J. Alex Brinson as Jeff Conniker Jennifer Spence as Grace Day Arnold Pinnock as Agent Walter Forbes William MacDonald as Gary Holden Ian Tracey as Ray Green Teryl Rothery as Patricia Holden Enrico Colantoni as Vincent Ingram Amanda Tapping as Dr. Katrina Perrow Stephen Lobo as Agent Wakefield Matthew Kevin Anderson as Derek Co Starring Steve Makaj as Police Sergeant Josh Blacker as Agent Callahan Haig Sutherland as Doctor Mori Paul Cheng as Tall Man Callum Seagram Airlie as Taylor Ben Wilkinson as Anthony Corrigan Jason McKinnon as Police Officer Howie Lai as Traveler 2150 Brandyn Eddy as Mark Tyson Bellusci as Teen #1 Anthony Scardera as Teen #2 Elysia Rotaru as Irene Danielle Kremeniuk as Secretary Lisa MacFadden as Doctor #3 Robert Moloney as Oliver Norton Carolyn Anderson as Agent Paulson Link Baker as Agent Morton Jazmine Campanale as Dr. Chen