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