In this exclusive authorized edition from the Queen of Mystery, the expert detective delves into an unsolved crime from the past involving the strange death of a husband and wife.

Hercule Poirot stood on the clifftop. Here, many years earlier, there had been a fatal accident followed by the grisly discovery of two bodies--a husband and wife who had been shot dead.

But who had killed whom? Was it a suicide pact? A crime of passion? Or cold-blooded murder? Poirot delves into the past and discovers that "old sins leave long shadows."

Hercule Poirot stood on the clifftop. Here, many years earlier, there had been a fatal accident. This was followed by the grisly discovery of two bodies--a husband and wife who had been shot dead.

But who had killed whom? Was it a suicide pact? A crime of passion? Or cold-blooded murder? Poirot delves into the past and discovers that "old sins leave long shadows."

Christie, Agatha

Agatha Christie is the most widely published author of all time, outsold only by the Bible and Shakespeare. Her books have sold more than a billion copies in English and another billion in a hundred foreign languages. She died in 1976, after a prolific career spanning six decades.