Molly Gray has never seen her parents. Raised by a loving and wise grandmother, she works as a maid in a hotel and considers it her calling—because keeping everything clean and in order is her true passion! But her relationships with people don’t work out too well, because since childhood Molly hasn’t been like everyone else. Her colleagues consider her more than strange—and they have good reason. So at twenty-five, Molly is lonely, and in her spare time she alternates between watching detective series and assembling puzzles… However, soon her own life turns into a detective story where she is assigned the role of the main suspect— the hotel guest was murdered, a rich and powerful Mr. Black. Now Molly has to solve the most important puzzle—or spend the rest of her days in prison…