Charles Osborne
Author
Summary
A thriller as well as a puzzler set in a foggy estate in Wales, 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 is unconvincing. 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 love and hate, suspicion and...
2) Black coffee
Author
Summary
The story concerns a physicist named Sir Claude Amory who has come up with a formula for an atom bomb (Black Coffee was written in 1934!). In the first act, Sir Claude is poisoned (in his coffee, naturally) and Hercule Poirot is called in to solve the case. He does so after many wonderful twists and turns in true Christie tradition.