Cast
- Rod Steiger as Harold Ryan
- Susannah York as Penelope Ryan
- George Grizzard as Dr. Norbert Woodley
- Don Murray as Herb Shuttle
- William Hickey as Looseleaf Harper
- Steven Paul as Paul Ryan
- Pamelyn Ferdin as Wanda June
- Pamela Saunders as Mildred Ryan
- Louis Turenne as Major von Koningswald
- C.C. Whitney as Mrs. Kestenbaum
Crew
- Mark Robson · Director
- Kurt Vonnegut Jr. · Writer
- Lester Goldsmith · Producer
- Fred J. Koenekamp · Cinematographer
- Dorothy Spencer · Editor
- Boris Leven · Production designer