Captain Emelin, nicknamed Emelya, Captain Vasin and Dolbunov are investigating the most complicated crimes, and criminologist Masha Likhacheva helps them in this. Emelya's reputation is so-so, the head of the department, Colonel Khitruk, dislikes him for his independent character, but has to put up with him because Emelya has a good disclosure.

• Oleg Gaas
• Aleksandr Palchikov
• Stepan Abramov
• Ekaterina Kozhemyakina
• Sergey Styopin
• Akilina Sokolova