Police officers are investigating the brutal murder of a businessman and his family. During the investigation, it turns out that the killer is a real professional, and some facts from the life of one of the members of the investigation team are revealed, as a result, colleagues begin to suspect him of a crime.—https://ru.wikipedia.org/wiki/%D0%9E%D1%84%D0%B8%D1%86%D0%B5%D1%80_55