There were no clear motives in Nadia’s murder, and private detective Tatyana Ivanova worked through different versions. Robbery, revenge, envy—none of it fit. It was clear only that the crime was committed by a person the girl knew well. That description could also apply to the victim’s mother, her fiancé, as well as her friends and classmates. The door wasn’t forced, nothing was stolen from the apartment, and the murder weapon left no traces of the attacker. Mysticism! But even after identifying the culprit, Tania understands that it’s impossible to convict the killer…