Serhiy Tkach

Throughout the 1980s, a number of young women disappeared in Eastern Ukraine. They were abducted by Serhiy Tkach who killed them and performed necrophiliac acts on them. He was a former forensic expert used his law enforcement knowledge to throw police off his trail. He was eventually caught and he confessed to killing 100 people. However, before he was apprehended, 15 men were arrested and imprisoned for his crimes, one of whom even committed suicide.