In 2000, Polish businessman Dariusz Janiszewski disappeared from Wroc?aw, and fishermen later found his tortured body floating in the Oder River with a rope binding his hands behind his back and looping into a noose around his neck. For three years, police had no suspect until a detective traced Janiszewski's missing mobile phone to Krystian Bala, a philosophy graduate who had sold it on an online auction site.
Investigators then read Bala's 2003 novel "Amok" and noticed that it described a killing with strikingly similar details to the real murder, including the rope setup and other elements only the murderer would know. A court convicted Bala of planning and directing Janiszewski's murder and sentenced him to 25 years in prison, and police later reported finding evidence on his computer that he had outlined plans for another killing to use as material for a second book.