Bruce Greenwood as Dr. Toby Green

Xavier Dolan as Michael Aleen

Carrie-Anne Moss as Olivia

Guy Nadon as Dr. Craig Jones

Colm Feore as Dr. James Lawrence

Catherine Keener as Nurse Susan Peterson

Gianna Corbisiero as Florence Da Costa

Cindy Sampson as Christelle

Larry Day as Sergeant Taylor

Melody Godin-Cormier as Amy Greene

Mark Donker as Jakobus Aleen

Matt Holland as Bruce

Enrique Pérez-Mesa as Marcus

Ethan Bolduc as Michael, 5 Years Old

Germano Santana as Michael, 7 Years Old