50th anniversary novel by Alexandra Marinina . For the first time, Anastasia Kamenskaya is studying an old criminal case on a real crime . The convict on him is still serving his sentence in a correctional institution . Since childhood, we have been accustomed to believe that the truth is one. She? — like a white pebble in a pile of black rubble. It is enough to go through everything, and you will definitely find it - the only, undeniable, unconditional truth ... But is it true? Once upon a time in a Moscow communal, a cruel triple murder of parents and a child was committed . The suspect himself appeared to be guilty .. He was arrested, investigated and tried by the court.. Twenty years later, an old criminal case falls into the hands of the legendary retired operative Anastasia Kamenskaya and a young journalist Peter Kravchenko. The guy believes that the convict was framed, and seeks to bring investigators to clean water. It turns out that everyone in this story is driven by their own truth, which, in turn, generates thousands of types of lies.