Old sins have long shadows...

Hercule Poirot stood on the cliff overlooking the rocks below and the sea breaking against them. Here where he stood the bodies of a husband and wife had been found. Here, three weeks before that, a woman had walked in her sleep and fallen to her death.

But why had these things happened...?

"A classic example of the ingenious three-card trick that she has been playing on us for so many years."
SUNDAY EXPRESS

"Splendid... she tells us all we want to know and nothong that is irrelevant."
THE TIMES