A famous multimillionaire is killed in front of several hundred spectators. His death seems natural - he managed to make many enemies. If not for one “but” - the murdered man knew in advance that someone was already preparing a bullet for him. He was kindly notified of this in a letter. Popular coach and human behavior specialist Alex King becomes a witness to the crime. Acting as a police consultant, he and Inspector Nina Mander take on the investigation. King's method is based on a very real approach to color typing of human characters. The author’s psychological superbestseller “There are only idiots around” is dedicated to him, which explains how, with the help of color typing, you can accurately read people’s thoughts and predict their actions. But will this approach work in the case of investigating a high-profile crime? Will the hero be able to figure out “what color” the killer is? Moreover, he has already identified a new victim.