Robert Clarke as Dr. Gilbert McKenna

Patricia Manning as Ann Russell

Nan Peterson as Trudy Osborne

Patrick Whyte as Dr. Frederick Buckell

Fred La Porta as Dr. Jacob Hoffman

Peter Similuk as George Messorio

William White as Police Lt. Peterson (as Bill Hampton)

Robert Garry as Dr. Stern

Donna King as Suzy's Mother

Xandra Conkling as Suzy

Del Courtney as Radio Deejay

Ron Honthaner as Policeman in Warehouse

Richard Cassarino as Barfly / Man on Beach with Kids / Policeman (as Cass Richards)

Helen Joseph as

Darryl Westbrook as

Bill Currie as

Pearl Driggs as Convalescing Woman on Roof

Fran Leighton as

Bob Hafner as

John Murphy as

Anthony J. Hilder as (As Tony Hilder)

Chuck Newell as

David Sloan as Newsboy

Robin C. Kirkman as Policeman (uncredited)

Douglas Menville as Policeman (uncredited)