Nigel and Derek, two cousins who didn't like each other since childhood, went on a boat trip... from which only one of them returned - Nigel. The police do not believe his confused story about Derek's mysterious disappearance and believe that the young man is a murderer, bunglingly trying to hide his crime. But Miles Breedon and his wife Angela are not at all inclined to unconditionally recognize Nigel as a criminal. What if he's not lying and Derek, who disappeared, is still alive? And if he is dead, then why must his cousin be blamed for his death?.. The talented detective Miles Breedon and his “Doctor Watson in a skirt” - his wife and assistant Angela - prepared to be politely bored in the country house of their recent acquaintances, typical nouveau riche, trying to get comfortable in society. However, their boredom was quickly dispelled when one of the guests, politician Worsley, was found dead in a silo during a prank car race. Suicide? Accident? Or is it still a cynical, calculated crime? But who among the motley crew could have compelling enough motives to get rid of the handsome and amiable Worsley?..