Henry Winkler
— Marty Klein
Patty Duke
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Richard Kiley
— Dr. RJ Cannon
Audra Lindley
— Anne Zusselman
Karl Malden
— Fred Zusselman
Jennifer Hetrick
— Nancy Klein
Jayne Atkinson
— Eleonor Barcroft
Doris Belack
— Fran
Vasili Bogazianos
— Dr. Sears
Ron Frazier
— Davis
Steven Gilborn
— Dr. Dalton
Tony Jay
— Weisfeld
James Karen
— Dr. X
Mitchell Laurance
— Stan
Alan Oppenheimer
— Stevenson
Nancy Youngblut
— Barbara Rice
Joel Anderson
— Reporter #1
Kirk Baily
— Arnie
Adilah Barnes
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Peter Boyden
— Dr. Paul Syrmopoulos
Lucy Butler
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Lynne Cormack
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Pierre Epstein
— Dr. Roland Pierson
Richard Fancy
— Justice Richard Marino
Alexander Folk
— Guard #1
Cassy Friel
— Arielle
William Glover
— Committee Man
Michael Hampton-Cain
— County Policeman
Susan Merson
— Dr. Natalie Kay
Jordan Myers
— Doctor #1