The main character Diana turns out to be a suspect in the murder because she does not voice an alibi, fearing her husband’s revenge and not wanting to set up another man with whom she was at the time of the murder and whom she has loved for many years. The investigator, initially confident of the heroine’s guilt, changes his opinion about her, despite the fact that the heroine revealed to him a true alibi. During the investigation, close men reveal themselves and their true attitude towards Diana: the husband forces her to sign a waiver of the child, and her lover, in the end, takes the heroine under his protection. But are their actions true? Why did Diana end up at the crime scene in the first place? Coincidence or someone's plan?