Colin Farrell character Steven Murphy
Nicole Kidman character Anna Murphy
Barry Keoghan character Martin Lang
Raffey Cassidy character Kim Murphy
Sunny Suljic character Bob Murphy
Alicia Silverstone character Martin's Mother
Herb Caillouet character Ed Thompson (Hospital Director)
Barry G. Bernson character Dr. Larry Banks
Denise Dal Vera character Mary Williams
Drew Logan character Principal (uncredited)
Bill Camp character Matthew Williams (uncredited)
Michael Trester character Elderly Man (uncredited)
William Cross character Conference Guest (uncredited)
Kenneth Meyer character Medical Consultant (uncredited)
Richard Doone character Hospital Visitor / Dinner Attendee (uncredited)
Anita Farmer Bergman character Nurse (uncredited)
Lea Hutton Beasmore character Conference Guest (uncredited)
Rachael McAdams character Conference Attendance / Nurse (uncredited)
Jerry Pope character Medical Conference Attendee (uncredited)
Megan Chelf Fisher character Diner Patron (uncredited)
Dylan Keith Adams character Doctor at Conference and Event Dinner (uncredited)
William Willet character Open Heart Patient on Table (uncredited)
Charles Poole character Patient / Fisherman (uncredited)
Josephine Elle character Doctor (uncredited)
Amy Clark character Conference Guest (uncredited)
John W. Harden character Conference Guest / Paramedic (uncredited)
Bryant Bentley character Paramedic (uncredited)
Nathaniel Sizemore character Hospital Orderly (uncredited)
Shuo Chen character Conference Guest (uncredited)
Steven Schraub character Medical Conference Guest (uncredited)
Dori Lucas character Conference Guest (uncredited)
George W. Ellerman character Medical Conference Attendee (uncredited)
Aaron Pullins IV character Medical Conference Attendee (uncredited)
Jennifer Henson character Doctor's Wife (uncredited)
Joanne Popolin character Medical Conference Attendee (uncredited)
Brian Lamont character Conference Guest (uncredited)
Gary Maloney character Medical Conference Attendee (uncredited)
Brian D. Schroeder character Diner Patron (uncredited)
Margot Westermen character Conference Guest (uncredited)
Michael D Overman character Nurse / Medical Conference Attendee (uncredited)
Derek Polen character Conference Guest (uncredited)
K.D. Richardson character Cafeteria Visitor (uncredited)
Charles P. Chambers character Banquet Attendee (uncredited)
Sammy Geroulis character Medical Conference Attendee (uncredited)
Michelle Dobrozsi character Visiting Consultant (uncredited)
Ming Wang character Doctor (Abdominal)
