A thriller as well as a puzzler set in a foggy estate, this mystery opens as a stranger walks into a house to find a man murdered and his wife standing over him with a gun. But the woman is dazed and her confession unconvincing. So the unexpected guest decides to help her and blame the murder on an intruder. Later, the police discover clues that point to a man who died two years previously and a Pandora's box of loves and hates, suspicion and intrigue is opened to the night air.