Investigator Maksim Krechetov from Vyazma came to Moscow looking for his son Sergey, with whom he lost contact. Maksim stayed with his old friend Mikhail Samarov, a major businessman living in a historic manor house in the Old Arbat district. Samarov gathered many relatives under one roof, but his dreams of a close-knit family never came true: the atmosphere in the house was far from cozy. Then, tragedy struck… As Krechetov learned, it wasn’t the first such case: the house had long been shrouded in grim legends. More than a hundred years ago, Samarov’s ancestor, a successful doctor, suspected his young wife of infidelity and planned a brutal revenge…