“They aren’t real”—this message was left by the killers at the crime scene. Who were “they,” and why did people who looked well-off suddenly decide to end their own lives, taking their loved ones with them to the grave? Witnesses say that shortly before it happened, the killers became irritated and heard some voices. Dvorzhak’s team takes on the investigation to see whether otherworldly forces were involved—but suddenly the voices begin to be heard by Voytěch and Sasha…