Еще раз про Золушку (Once Again About Cinderella)

The daughter of a major banker Vladimir Kuznetsov and her brother's friend Ivan were found murdered in the girl's apartment. Very little time passes and it turns out that Robert - Alla's brother - is also dead. The investigation suspects Tina, Kuznetsov's new wife. But detectives are confused by the fact that peas were neatly laid out in a row at the crime scene. This is almost unmistakable evidence that the killer has serious mental disabilities.