Lance Kerwin as John Curtis as a Youth

Brian Keith as Arnold Curtis

DeAnn Mears as Alice Curtis

Melissa Sue Anderson as Nancy Rizzi

Rafer Johnson as Himself

Michael Landon as John Curtis

Walker Edmiston as Dr. Claymor

Clifford A. Pellow as George Sanders

Bing Russell as Fred Dawkins

Randy Faustino as Tony

Dermott Downs as Donnie

Robert Hackman as Mr. Rizzi

Barbara Collentine as Miss King

Herb Vigran as Guard

Hank Stohl as Asst. Director

Mona Bruns as Cashier

Bill Dearth as Policeman

Shane Kerwin as Frankie