John celebrates his birthday at a murder mystery evening with the couples all in fancy dress. However, a real-life mystery emerges - is it Maureen or her character, Lady Greystoke, who is having an affair?
For his birthday party John insists on a murder mystery theme with fancy dress, leading to Carol and Trevor turning up in ecclesiastical garb and Joyce and Alan as somewhat resentful servants. Maureen adopts an aristocratic persona but is interrupted by calls from the mysterious Diego, who turns out to be part of John's present though Trevor and Carol suspect otherwise. Alan must retrieve an incriminating gift and Trevor separate reality from role play before all is resolved.—don @ minifie-1