Daniel Pilon
— Dr. Bill Fuller
Kate Reid
— Dr. Jessica Morgan
Céline Lomez
— Margo Simar
Michael J. Reynolds
— Dr. Dave McKay
Brenda Donohue
— Dr. Celia Graham, Bill's Associate
Jonah Royston
— Dr. Allen Saunders, Public Health Officer
Barbara Gordon
— Joan Fuller
Jack Van Evera
— Man with Margo
Trevor Rose
— Roger
Renata Bosacki
— Jill
Michael Donaghue
— Guard #1
Joseph Golland
— Dr. Liebowitz
Alan Haberfield
— Epileptic
Linda Kemp
— Woman in London Hospital
John Kerr
— Escaping Guard
Catherine Marielle
— Jill's Mother
Chris Lumiere
— Escaping Guard
Howard Reynolds
— Board Chairman