Murder in Three Acts

In Acapulco, Hercule Poirot (Peter Ustinov) is a guest at a dinner party when one of the others clutches his throat and dies. The death looks natural, until a second party with most of the same guests ends with another body. Gary Nelson films it as a made-for-television puzzle, with Poirot and Captain Hastings (Jonathan Cecil) working the case through what each guest says.