Adrian Gray died violently, at the hands of one member of his family. Will the killer be able to deflect suspicion and get away with murder? Or will the unexpected play a significant role in the course of events?

Carolyn Crale was convicted of poisoning her husband. She died in prison. Sixteen years later, her daughter came to Hercule Poirot and asked him to find evidence that her mother was innocent - or that would prove her guilt.

Maigret's wife and doctor wanted him to take a vacation - and Maigret had to find a way to stay informed about a murder investigation.

A holiday pantomime of the folk story of Dick Whittington and his cat has an unexpected ending: the actress playing Dick Whittington dies onstage - victim of cyanide poisoning.

The very odd behavior of the woman calling herself "Harriet Hall" seemed frightening to members of the Dene family. But who uncovered Harriet's secret life - and did it lead directly to murder?