Rachel Talalay Director Tom Felton The Grand Guignol Actor Indya Moore Peggy Drood Actor Oona Laurence Liz Lerue Actor Momona Tamada Japanese Babysitter Actor Cameron Bancroft Pete Ferguson Actor Crystal Balint Alexa Ferguson Actor Tamara Smart Kelly Ferguson Actor Eliza Faria Sophomore Girl Actor Alessio Scalzotto Actor Ian Ho Jacob Zellman Actor Linden Porco Toadie Actor Tamsen McDonough Mrs. Zellman Actor Ashton Arbab Tommy Actor Troy Leigh-Anne Johnson Berna Vincent Actor Samantha Schimmer Student Actor Anisa Harris Deanna Actor Lynn Masako Cheng Cassie Zhen Actor Joe Ballarini Screenwriter Amie Karp Producer Ivan Reitman Producer Naia Cucukov Executive Producer Ilona Herzberg Executive Producer Gregory Middleton Cinematographer Stein Myhrstad Film Editing Matthew Margeson Original Music David Brisbin Production Design Michael Corrado Art Director Carol Lavallee Set Decoration Carrie Grace Costume Design Tamara Notcutt Casting