The Secret of the Ninth Caliber

A young girl, Karina Mikhailina, was shot dead with a pistol. The blame for the crime was taken by her fiancé's grandmother. According to her, Karina had been bothering the old woman for a long time, and when she once tried to rob her, the pensioner used the weapon left by her deceased husband, a former party functionary. However, detectives Guryev and Kryachko from MUR doubt that the elderly woman with poor eyesight and an unsteady hand could make such an accurate shot. They begin to study the surroundings of the potential criminal and unexpectedly witness a terrible family secret…