Colin Farrell

Steven Murphy

Nicole Kidman

Anna Murphy

Barry Keoghan

Martin Lang

Raffey Cassidy

Kim Murphy

Sunny Suljic

Bob Murphy

Bill Camp

Matthew Williams

Alicia Silverstone

Martin's Mother

Denise Dal Vera

Mary Williams

Anita Farmer Bergman

Nurse (uncredited)

Lea Hutton Beasmore

Conference Guest (uncredited)

Charles Poole

Patient / Fisherman (uncredited)

Bryant Bentley

Paramedic (uncredited)

Joanne Popolin

Medical Conference Attendee (uncredited)

Carly Tamborski

Doctor at Conference (uncredited)

William C. Ingram

Janitor (uncredited)

Derek Polen

Conference Guest (uncredited)

John E. Brownlee

Coastal Walker (uncredited)

Shawn P. Farrell

Doctor at Conference (uncredited)