Anna Savelyeva falls from the window of her office on the thirteenth floor. Vasin, Dolbunov and Emelya arrive at the scene. Savelyeva's husband and lover fall under suspicion, but they are not involved in the crime. It turns out that Savelyeva has a father, a wealthy man who recently found out about the existence of his daughter and wrote her into his will. He is seriously ill himself. Emelya learns about the businessman's second heir, son Rodion...