This time, detective Alena Dmitrieva decided to make a female doctor the heroine of her new novel. And now, in order to collect material, she travels around the city with Sveta, an ambulance doctor. A terrible pattern begins to surprise her: literally in a few days the number of suicides has increased sharply... And this, as doctors have noticed, happens periodically. All suicides have something in common. All of them were coded: some from smoking, some from excess weight, like Alena’s friend Sveta... Dmitrieva’s suspicions were strengthened when she found the diary of one of the first female investigators in Russia. There was described a case of hypnosis of a victim with a mindset of self-destruction. Eh, it would be better not to share Alena’s guesses with anyone - after all, the careless words of a curious writer turned into big problems for her...