“They aren’t real”—that was the message left by the killers at the crime scene. Who were “they,” and why did people who looked prosperous suddenly decide to kill themselves, taking their loved ones to the grave with them? Witnesses say that shortly before the incident, the killers became irritable and heard some voices. Dvorzhak’s team sets out to investigate whether otherworldly forces are involved—but suddenly voices start being heard by Vojtěch and Sasha…