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

Herb Caillouet

Ed Thompson (Hospital Director)

Barry G. Bernson

Dr. Larry Banks

Denise Dal Vera

Mary Williams

Drew Logan

Principal

Michael Trester

Elderly Man

Anita Farmer Bergman

Nurse (uncredited)

Lea Hutton Beasmore

Conference Guest (uncredited)

Dylan Keith Adams

Doctor at Conference and Event Dinner (uncredited)

Charles Poole

Patient / Fisherman (uncredited)

John W. Harden

Conference Guest / Paramedic (uncredited)

Bryant Bentley

Paramedic (uncredited)

Aaron Pullins IV

Medical Conference Attendee (uncredited)

Joanne Popolin

Medical Conference Attendee (uncredited)

Carly Tamborski

Doctor at Conference (uncredited)

David Pittinger

Student's Dad (uncredited)

Michael Lee Bailey

Conference Guest (uncredited)

John Newsom

Doctor at Banquet (uncredited)

Robert Gerding

Visiting Consultant (uncredited)

William C. Ingram

Janitor (uncredited)

Beverly Kristy

Doctor (uncredited)

Derek Polen

Conference Guest (uncredited)

John E. Brownlee

Coastal Walker (uncredited)