Michael Ironside as Colt Hawker

Lee Grant as Deborah Ballin

Linda Purl as Sheila Munroe

William Shatner as Gary Baylor

Lenore Zann as Lisa

Harvey Atkin as Vinnie Bradshaw

Michael J. Reynolds as Porter Halstrom

Kirsten Bishop as Denise

Neil Affleck as Police Officer

Walker Boone as Elevator Policeman

Domenico Fiore as Policeman 2

Lorena Gale as Nurse 1

Helen Hughes as Louise Shepherd

Deborah Kirshenbaum as Connie Wexler

Elizabeth Leigh-Milne as Patricia Ellis

Maureen McRae as Elizabeth Hawker

Dustin Waln as Mr. Hawker

Damir Andrei as Paramedic

Dorothy Barker as Sally Flavin

Steve Bettcher as Anesthetist

Richard Rebiere as Entrance Policeman

Terrance P. Coady as Ent. Security Officer

Richard Comar as Emergency Doctor 2

Dora Dainton as Mrs. Corrigan

Sylvie Desbois as Main Desk Nurse

Yvan Ducharme as Policeman 1

Sarita Elman as T.V. Director

Kathleen Fee as Emergency Nurse

Tali Fischer as Bridget

Richer Francoeur as Anesthetist

Angela Gallagher as Desk Nurse

Judith Gay as Script Assistant

Isadore Goldberg as Old Man (Cataracts)

Dean Hagopian as Journalist 1

Victor Knight as Hospital Administrator

Sheena Larkin as Officious Nurse

Sylvia Lennick as Fay Marcus

Frances March as Florie

Steve Michaels as Plainclothesman 1

Kimberly McKeever as Radiologist

Bob McKeowan as Floor Director

Malcolm Nelthorpe as Entrance Security Officer

Roland Nincheri as Emergency Doctor

Mary Rathbone as Mrs. Marsh

Ron Robbins as Hair Dresser

Robby Robinson as Matthew

Danielle Schneider as Donna Maloney

Lisa Schwartz as Young Trainee

Danny Silverman as Young Colt

Marty Starr as Sally's Boyfriend

Jérôme Tiberghien as Grant

Katherine Trowell as Journalist 2

Len Watt as Clement Pine

George E. Zeeman as Emergency 2

Charles Dennis as Doctor (uncredited)