The Russian detective series "Filin" tells the story of a doctor who works in the trauma department of a city clinic. His name is Alexei Filippov, but patients have gotten used to calling him by the nickname Filin (Owl). Unexpectedly, he discovers a talent for detective work. After a car accident 10 years ago, in which his wife died, the protagonist suffers from insomnia and tries everything to fall asleep. Filin uses various methods for this purpose. At first, alcohol helped him the most, but soon everything changed.