Marina Serova is a phenomenon of the modern Russian detective genre. A graduate of the Law Faculty of Moscow State University, she worked in the Prosecutor General's Office. From 1987 to the present – an employee of one of the special services. Participated in combat operations and operational activities. The author of a number of action-packed stories, the total circulation of which exceeds twenty million copies. Have you always dreamed of looking behind the circus arena after a performance? Detective "Attention, Deadly Number!" will give you such an opportunity - you will find out what criminal stories are hidden behind the scenes. Going to the circus with her friend, private detective Tatyana Ivanova does not yet suspect that she will have to visit it every day, and not at all as a spectator. A famous gymnast is killed right in the arena during a performance. But who could he interfere with? An offended ex-wife? The would-be bride? Colleagues who were jealous of fame and money? Former business partners? Or maybe the gymnast himself is dishonest?.. A weapon was found in his dressing room. Someone is clearly playing a double game here, and it’s not so easy to figure out who exactly.