George Peppard

as Dr. Jake Goodwin

William Daniels

as Dr. Moresby

Louise Sorel

as Carole Simon

Strother Martin

as LeRoy Atkins

Zohra Lampert

as Dr. Norah Purcell

Oskar Homolka

as Dr. Helmut Von Schulthers

Victor Campos

as Dr. Felipe Ortega

Peter Hooten

as Dr. Madison

Albert Paulsen

as Dr. Janos Varga

Giorgio Tozzi

as Sanantonio

Jacqueline Brookes

as Frances Hollander

Ben Masters

as Felix Needham

Maxine Stuart

as Scotty

Rose Gregorio

as Rose Sanantonio

William Traylor

as Bill Hinshaw

Trisha Noble

as Sabina Rogoff

Scott McKay

as Adrian Hollander

Wendy Phillips

as Debbie Hinshaw

Frances Osborne

as Muriel Emhardt

Milt Kogan

as Dr. Korngold

Larry Gelman

as Glick

Bob Harks

as Orderly (uncredited)

Mary von Toy

as Grace Chang

Eleanor Zee

as Mavis Porter

Karen Knotts

as Myrna