In the book, the author presents us with two stories that captivate us with the unpredictability of events that are gaining momentum. Having read them to the end, you involuntarily come to the conclusion: “Still, there is something there.” “Coincidence.” This morning turned out to be joyless for Margarita Shuvalova and ended in a quarrel with her husband. Left alone, the woman tries to calm down. She doesn’t even suspect that the coming day will bring a surprise that will change her whole life. The heroine accidentally comes across a book with the simple title “Coincidence.” It describes the life of the heroine, events that no one but herself can know about. Surprisingly, the author is Margarita Semenova. What is this, a pseudonym that coincidentally coincided with her name and maiden name, or, in this way, someone reminds of herself? Memories of a terrible story from childhood, the sudden death of a friend trying to find the creator of this ill-fated book, is this connected? Margarita finds her childhood friend, Alexei Danilov. Mysterious and frightening events unite the heroes, they understand that they once invaded the territory of something mystical, something that they should not have touched. Coincidence, everything can be attributed to coincidence. But where is the coincidence, where is reality, and where is mysticism? Do coincidences even exist, or is it easier for us to think so? Having read this story to the end, everyone has the right to draw their own conclusion: “Up the stairs leading down.” This exciting story happened in our days. The main character, Kira Knyazeva, divorces her husband and moves from him to a new apartment. It would seem that life is getting better, the New Year holidays are ahead. Pleasant bustle, anticipation of some miracle, great mood, everything made Kira happy on this day of the passing year. Who could have known that after leaving the house to go to the store, she would never return to those newly renovated walls. Taking everything that was happening at first as a prank, Kira gradually realizes that she was trapped in incredible events. Where is the way out? Is it needed? Is it necessary to return to a place where, in fact, no one is waiting for her? Love, passion, loss, fear, helplessness, despair, the heroine will have to go through all this in a few days. Does she have the right to choose? Is there a chance to go back to the beginning? And who knows where it started and where it ended.