Steve Carella's sister's fiance receives a box with a black widow - a symbol of revenge. Thanks to the quick and coordinated actions of Carella’s comrades, more than one murder is prevented. It is noteworthy that the threat-warning did not come from actual criminals. A happy accident, that's it... The rivals' struggle for possession of a piece of the photograph leads them both to death. This case becomes the starting point for the discovery of the missing fragments, and then the treasure of 750 thousand dollars. Contents: 1. Ransom, 2. Until death, 3. Ordinary work, 4. Puzzle