Trying to find how a millionaire wound up with a phony diamond brings Hercule Poirot to an exclusive island resort frequented by the rich and famous. When a murder is committed, everyone has an alibi.
- Genre: Thriller, Crime, Mystery, Drama
- Studio: EMI Films, G.W. Films, Titan Productions, Agatha Christie Limited
- Keyword: detective, based on novel or book, greece, island, murder, murder mystery, holiday resort
- Cast: Peter Ustinov, Jane Birkin, Nicholas Clay, Maggie Smith, Diana Rigg, Denis Quilley