Peter Ustinov is Hercule Poirot, the master detective, in this Agatha Christie murder mystery film. An opulent beach resort provides a scenic background to this amusing whodunit as Poirot attempts to uncover the nefarious evildoer behind the strangling of a notorious stage star. Is the killer one of the many rich and famous patrons in attendance, or is the answer even more diabolical? Before the final curtain call, Poirot must find the truth.