A drop of poison. Extra evil. Death on the slope

The professor, who remained paralyzed after the car accident, is painfully worried that he became a burden for the young beauty of his wife. In despair, he decides to suicide, kidnaps poison from the laboratory and ... loses the coveted bottle. Now it is necessary to find a dangerous loss until others have suffered from it. Death is canceled!
Millionaire Aubrey Moon behaved like a scoundrel and a sadist, so the attempt on his life in the luxurious Hotel Bomont did not surprise anyone.
However, the manager of the Bomont, part-time amateur detective Pierre Shambrene unexpectedly notices an entertaining detail: almost all the hotel guests suffered from the vile muna. Which of them finally decided to take scores with the enemy?
A few years ago, at the Darlbruk ski resort, Peter Styles and his father were attacked by a mysterious killer. The Senior Styles died, and Peter miraculously managed to avoid death, and he remembered only one thing - the frantic laughter of the maniac.
And now, when someone kills two girls in the same resort, Stiles, who again heard a familiar laughter, understands: in Darlbruck a bloodthirsty psychopath is operating, which will not stop until they catch him