Britain’s most notorious serial killer, Dennis Nilsen, confessed to killing 15 people in 1983. Over a five-year period, he picked up vulnerable young men, lured them back to his home and strangled them, before disposing of their bodies under the floorboards. The truth about how and why he killed has been the subject of much speculation in books and documentaries over the decade...。Sumala, a name that is feared by people in a village in Semarang Regency from the past until now. No one dares to go out when night falls because Sumala will come to kill.。