Dead Man's Folly

Hercule Poirot (Peter Ustinov) is invited as an "expert" to a country house for a murder hunt game, but a real murder occurs instead. The investigation follows Poirot and his associate Captain Arthur Hastings as they try to unravel the connection between seemingly unrelated events: a girl playing dead body being murdered, a lady of the manor going missing, and an old man's body being pulled from the river.