Prof. Stephen Turner
William Shatner
Barbara
Lynn Carlin
Karen
Lindsay Crouse
Harry Vogel
Charles White
Lab Technician
Gregory Abels
Mr. Hughes
Robert Burr
Bully in Bar
Tom Quinn
Mrs. Carol
Billie Lou Watt
Michael Howard
Professor
Jeff Pomerantz
Damon Evans
Mario, the Waiter
W.T. Martin
Reed
Ossie Davis
Gary Cookson
Lab Technician (uncredited)
John Travolta
Mrs. Schnagel
Viveca Lindfors
Crossland
Estelle Parsons
Dr. Goodman
Roy Poole
Mancuso
Mike Kellin
Mr. Dennison
Richard McKenzie
Dr. McBride
Fred J. Scollay
Dahlquist
Stephen Macht
Writer
George Bellak
Director
Charles S. Dubin
Production Supervisor
Al Rosen
Set Decoration
Wesley Laws
Executive Producer
Bob Markell
Conductor
Charles Gross
Special Effects
Neal Schatz
Associate Producer
Costume Design
Leslie Renfield
Sound
B.A. Taylor
Producer
Tony Masucci
Original Music Composer
Production Design
Victor Paganuzzi
Assistant Director
Rowland Vance