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)