"Medium-strength jam" is a book that belongs to the genre of detective literature and is known under the authorship of Bertis and Thomson. In this tense work, the story of a mysterious murder in a small provincial town is revealed. The main character, a detective, psychologically searches for all possible versions to unravel the tangled tangle of circumstances. The authors skillfully depict the psychology of the characters, giving each of them depth and many secrets. "Medium-strength jam" is an exciting book that allows readers not only to enjoy high-quality literature, but also to experience the real atmosphere of a detective story with all its unpredictable twists and turns.