演员

• Janet Kidder — Dr. Siskin
• Tyler Perry — Richard
• Richard Armitage — Tom Cahalan
• Carrie-Anne Moss — Rhona Nack
• Alex Zahara — Allen
• Robert Moloney — Dr. Ryan
• Agam Darshi — Dr. Khan
• Daniel Bacon — Dr. Han
• Alison Araya — EEG Tech
• Chloë Grace Moretz — Susannah Cahalan
• Jenny Slate — Margo
• Jenn MacLean-Angus — Giselle
• Ken Tremblett — Senator
• Navid Negahban — Dr. Najjar
• Elizabeth Bowen — Publicist
• Nicole LaPlaca — Young Nurse
• Jessie Fraser — Woman
• Lee Majdoub — Guy
• Thomas Mann — Stephen Grywalski