The Staff of the Two-Faced Janus

2024. A double tragedy in Moscow: a young woman, the author of a popular blog about phone scammers, is murdered. And her neighbor, a retired police colonel, is found hanged in his own apartment. The official version: murder and suicide. The case is closed quickly and conveniently. Too conveniently…
Sixty-six years later, the son of the acclaimed writer Strazhalkovsky wants to get to the truth. Not out of a thirst for justice, but for the reissue of the book that brought his family fame and money, in which one of the chapters is dedicated to this story. The reissue requires "clarification of facts." He hires agent Yevgeny Bocharov to go back in time. In 2090, the "Tunnel" technology allows for time travel and observation, but not intervention. The mercenary is prepared by Nayane - a young instructor for whom the case becomes personal much sooner than she realizes. Meanwhile, someone very influential does not want this "flight" to take place…