John Hough Director Rod Steiger Pa Actor Yvonne De Carlo Ma Actor Sarah Torgov Cynthia Actor Terence Kelly Psychiatrist (as Terry Kelly) Actor Mark Erickson Jeff Actor Caroline Barclay Terri Actor Mark Lindsay Chapman Rob Actor Fiona Hutchison Lynn Actor Burt Wetanson Writer Christopher Harrop Producer John Quested Producer Raymond R. Homer Executive Producer Michael Manley Executive Producer George Walker Executive Producer Harvey Harrison Cinematographer John Victor Smith Film Editing Alan Parker Original Music David Hiscox Production Design Robert Logevall Set Decoration