In the late 19th century in the Russian Empire, “vorolovy” (agents) played an important role in the investigation system—men who, for a fee, hunted down dangerous criminals. In a situation where passports contain no photographs, and checking an alibi takes months, one can rely only on experience and intuition.
Now, after the mysterious death of a well-known actress, investigator Pyotr Alexandrovich Azarevich faces a difficult task: he has four suspects, two actresses—each of whom could become the next victim—limited time, and no right to make a mistake.