José Ferrer as Marc Denne

Sue Lyon as Kim Denne

John Ericson as Dr. Gregg Martin

Leslie Parrish as Kathy Logan

John Carradine as Dr. Welsey Edwards

Jerome Guardino as Lt. Pegler

Richard Band as Contractor

Gary Baxley as Impound Yard Officer

Ron Carter as Policeman

Barry Chase as Policeman

Rick Deming as Boy in Van

Paul Dubov as Dr. Cross

John Hayes as Man Driving Car

Dwight Krizman as Policeman

Reggie Nalder as Man at Swap Meet

Margaret O'Heron as Nagging Wife

Dawn Orr as Girl in Van

Lenny Shabes as Policeman

Speed Stearns as '56 Ford Driver

John Tilton as Policeman

Charles Band as Motorist (uncredited)

Bill Williams as Cop (uncredited)