A retired detective is trying to catch a serial killer who uses Russian letters to find his victims.
| Directing | Karll Panaka | Director |
| Writing | Timur Khvan | Writer |
| Writing | Vadim Galygin | Writer |
| Art | Fyodor Savelyev | Production Design |
| Production | Maxim Filatov | Producer |
| Writing | Tair Mamedov | Writer |
| Sound | Alexey Aygi | Music |
| Production | Timur Khvan | Producer |
| Production | Vadim Galygin | Producer |
| Camera | Dmitry Gribanov | Director of Photography |
| Costume & Make-Up | Pyotr Gorshenin | Makeup Artist |
| Sound | Yuri Reinbakh | Sound Director |
| Visual Effects | Artem Isaakyan | VFX Supervisor |
| Crew | Valeriy Derkach | Stunt Coordinator |
| Production | Olga Loginova | Casting Director |
| Camera | Anton Kostromin | Additional Director of Photography |