An excellent representative of the detective genre from the perfect murder category. The corpse is in a room locked from the inside on the third floor of the house, with the windows covered with bars and looking out into the abyss. The key itself is in a terrarium with a poisonous reptile, and on the windowsill there is a trace of a devil’s hoof. Moreover, there is a local legend about the curse of the Sword of Damocles hanging over the inhabitants of the estate. From the first to the last page it is not possible to understand who the murderer is. Although the author honestly and in detail presents to the detective (aka Joe Alex himself) and the readers all the circumstances of this undoubtedly cunning plan.