Late in the evening, a woman was found strangled in a shopping center parking lot. Her body was discovered by a customer, whose son for some reason did not pick her up. Chief Inspector Wexford, who led the investigation, began to work out all possible options. And the most promising version for the police seemed to be that this very son was involved in the crime. Particularly interesting was the fact that the murdered woman was covered with an old curtain that had previously been in the trunk of his car. In addition, it turned out that the young man himself was not completely normal. And although he stubbornly denied the fact of acquaintance with the murdered woman, the police found out that they could previously have crossed paths at work. All in all, Wexford has the perfect candidate for a criminal! But an experienced detective instinctively senses: everything is much more complicated here...