After the Funeral by Agatha Christie

Time to bury the hatchet...
In a dead man's sister

There are certain things that are best left unsaid. Though tragedy had touched the life of the wealthy Richard Abernethie, his sudden death seemed pretty unremarkable for a man of his age. So why would his sister wait until his funeral to say he had been murdered?

When she is savagely killed with a hatchet the next day, her extraordinary remark suddenly takes on a chilling significance. In desperation, the family solicitor turns to Hercule Poirot to unravel the mystery . . .