This novel is a hellish mixture of intellectual logical investigation and psychological thriller. In just one month, private detective Alexei Kisanov needs to solve 12 murders in order to prevent the 13th. All murders are different, but they have one thing in common - a maniac who plays with the detective like a cat with a mouse. Perhaps for the first time, the author presents us with a negative hero, more intelligent than her main character. This doesn't happen! Garmash-Roffe is taking risks again. From chapter to chapter, the reader rushes through the plot like on a roller coaster - Kisanov is about to get hold of an invisible maniac, and suddenly - bang - a complete failure, a dead end, we urgently need to come up with something, a new version... Hours count, then minutes... Hope again...If you have never experienced the feeling when, while reading, your breath freezes from overload and weightlessness, then this is just such a book! Read! And don’t feel sorry for yourself!