About the book: 2022 / A patient with strange symptoms is admitted to a private clinic owned by the Zaslon company - under the influence of sunlight he becomes a bloodthirsty psychopath. An experimental method of wave therapy is applied to him, but “something goes wrong,” and a quarantine lockdown isolates the clinic from the outside world. The disease is spreading like a fire in a dry forest, the number of infected killer madmen is growing rapidly, and the doctor and Zaslonovsky engineer have only seventy-two hours to stop the epidemic, otherwise the clinic will be wiped off the face of the earth.