Возвращение Мухтара S11E18 - Конфеты с секретом

Rimma Viktorovna ends up in the hospital with cyanide poisoning after eating a candy from a set given to her daughter-in-law Zoya Kuptsova by a colleague. But the candy, as the examination shows, does not contain poison. Soon, someone tries to poison the dog of the director of the company where Zoya works, and also with cyanide...