Characters played by Lance Kerwin
John Curtis as a Youth
Characters played by Brian Keith
Arnold Curtis
Characters played by DeAnn Mears
Alice Curtis
Characters played by Melissa Sue Anderson
Nancy Rizzi
Characters played by Rafer Johnson
Self
Characters played by Michael Landon
John Curtis as an Adult
Characters played by Walker Edmiston
Dr. Claymor
Characters played by Clifford A. Pellow
George Sanders
Characters played by Bing Russell
Fred Dawkins
Characters played by Randy Faustino
Tony
Characters played by Dermott Downs
Donnie
Characters played by Robert Hackman
Mr. Rizzi
Characters played by Barbara Collentine
Miss King
Characters played by Herb Vigran
Guard
Characters played by Hank Stohl
Assistant Director
Characters played by Mona Bruns
Cashier
Characters played by Bill Dearth
Policeman
Characters played by Shane Kerwin
Frankie