Black Wings

On his birthday, Lyov Guryev's wife gifted him a certificate for a flight in a commercial airplane. However, immediately after landing, the exciting trip was overshadowed by the pilot's murder. Guryev, the first to reach the dying man, could only... make out one word: «Isaev». The next day, at the same airbase, a fire occurs, claiming the life of the co-pilot, and operatives find a large stash of counterfeit dollars in one of the planes. Guryev and Krychko realize: the series of tragedies is not coincidental, something must connect these incidents. And who is Isaev? The detectives do not yet know that the search for answers to these questions will force them to return many years back to identify several strange victims…