Gilbert Cates Director Patty Duke Anna Marie Duke Actor Howard Hesseman John Ross Actor Ari Meyers Patty Duke, as a youth Actor Millie Perkins Frances Duke Actor Deborah May Ethel Ross Actor Jenny Robertson Patty, as a young adult Actor Arthur Taxier John Astin Actor Karl Malden Doctor Harold Arlen Actor John McGreevey Screenwriter Sheldon Pinchuk Executive Producer Mark Irwin Cinematographer Lee Burch Film Editing Garry Sherman Original Music Bryan Ryman Production Design Lynda Burbank Set Decoration Evelyn Thompson Costume Design Penny Ellers Casting