The Hollow (S09E04)

Poirot is at the centre of a bizarre murder game during a country house weekend. Fascinated by the strange behaviour and relationships of the Angkatell family, Poirot takes the chance to spend a weekend at their home. Events take a sinister twist when the family stages a murder tableau. As Poirot attempts to conceal his annoyance at their game he is horrified to discover that the 'victim' John Christow really has been shot. Prime suspect for the murder of the handsome, charismatic doctor is his plain and docile wife Gerda. As Poirot investigates further, he discovers everyone in the house had a reason to want Christow dead. (iTunes)