The novel was written in 2015. One of the first attempts to write. Inspired by King's novels. There are errors and typos.* * *What could be more dangerous than being locked in a madhouse among murderers and the insane? Only if you are on board a passenger plane at an altitude of ten kilometers above the ground, where, regardless of who you are: a passenger, a flight attendant or a pilot, an unknown plague that destroys the mind will reach everyone. Those remaining on the ground can only watch helplessly and look for a way to save the out of control airliner. And only solving the main mystery of the last century - the Tunguska disaster - can give hope.