Captain of the police Ekaterina Petrovskaia hurriedly went down the stairs. Rusty railings, rusty steps… Only now did she realize she had made a terrible, unforgivable mistake: she hadn’t told Colonel Gushchin where she was and what she intended to do. And what did she intend to do? To break into a closed department store, under guard, packed with goods at night—quietly and secretly—after the murderer had already been caught, exposed by evidence, and had confessed. But then what about that call for help? “She can still be saved!” Katya was terrified. Alone, in an enormous store where so many murders had taken place… Katya moved quietly and carefully. She had to find out what evil lurked here since the time it had gone unpunished and unsatisfied…?