1978 film by Anthony Page

1988 film directed by Michael Winner

1978 film by John Guillermin

1982 film by Guy Hamilton

1972 film by Alfred Hitchcock

first of two murder mystery novels written by twin authors Anthony and Peter Shaffer.

1971 film directed by Al Viola, Roy Boulting and Arne Sucksdorff

1974 film by Sidney Lumet

play

1972 film directed by Joseph L. Mankiewicz

play written by Anthony Shaffer

2006 film by Neil LaBute

1973 film directed by Robin Hardy

1978 novel by Robin Hardy and Anthony Shaffer

play by Anthony Shaffer

book by Anthony and Peter Shaffer