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