A new-look series of Hercule Poirot books for the 21st century.
Hercule Poirot stood on the cliff-top. Here, many years earlier, there had been a tragic accident. This was followed by the grisly discovery of two more bodies - a husband and wife - shot dead.
But who had killed whom? Was it a suicide pact? A crime of passion? Or cold-blooded murder? Poirot delves back into the past and discovers that "old sins leave long shadows".