James Coburn
— Patman
Kate Nelligan
— Peabody
Fionnula Flanagan
— Abadaba
Leslie Carlson
— Mr. Abernathy
Candy Kane
— Mrs. Beckman
Michael Kirby
— Dr. Turley
Alan McRae
— Dr. Bloom
Jan Rubeš
— Vrakettas
Hugh Webster
— Mr. Wolfe
Lynne Griffin
— Monica
Charles Jolliffe
— Priest
Kenneth Wickes
— Mr. Arnoldi
Tabitha Herrington
— Montgomery
Lois Maxwell
— Director
Laura Press
— Nurse Graves
Cathryn Balk
— Singing Lady
Hagan Beggs
— Bateman
Paul Rothery
— Dr. Maclarland
David Diamond
— Big Eddy
Blu Mankuma
— Orderly
Shirley Barclay
— Orderly
David L. Crowley
— Orderly
Deryl Hayes
— Orderly
John Vye
— Bus Driver
Garry Chalk
— Policeman
Lloyd Berry
— Policeman
Betty Linde
— Mental Patient (uncredited)
Judith Berlin
— Mental Patient (uncredited)
Alan Rose
— Morgue Attendant (uncredited)