Charlize Theron Producer
Chloë Grace Moretz Susannah Cahalan
Tyler Perry Richard
Carrie-Anne Moss Rhona Nack
Navid Negahban Dr. Najjar
Richard Armitage Tom Cahalan
Jenny Slate Margo
Jason Tobias Associate Producer
Thomas Mann Stephen Grywalski
Gerard Barrett Director, Screenplay, Co-Producer
Lee Majdoub Guy
Alex Zahara Allen
Jenn MacLean-Angus Giselle
Agam Darshi Dr. Khan
Farnaz Khaki-Sadigh Costume Design
Elizabeth Bowen Publicist
Alison Araya EEG Tech
Todd Giroux Associate Producer
Robert Moloney Dr. Ryan
Janet Kidder Dr. Siskin
Ken Tremblett Senator
Lauro David Chartrand-DelValle Stunt Coordinator
Daniel Bacon Dr. Han
Brian McCaig Intern
Susannah Cahalan Novel
Lindsay MacAdam Producer
Lindsay Navarro Young Waitress
A.J. Dix Producer
Beth Kono Producer
Nicole LaPlaca Young Nurse
Jessie Fraser Woman
Rob Merilees Producer
Lisa Wolofsky Executive Producer
John Paesano Original Music Composer
Vincent Gail Dr. Samson
Ross Dempster Production Design
Yaron Orbach Director of Photography
JC Bond Editor