Like many I watched the this seriel killer on the box in an interview and it was chilling yet it's nothing compared to the book about him. He was vicious killer who killed anyone he felt like for no reason,over a 100 at his count. It's a horrific read,I've got it on Kindle cheapish, Also at the same time I downloaded "The Brotherhood" a true story of two NY cops who murdered for the Mafia! I've only just started it but talk about corruption in the New York Police Dept, a lot of informants were murdered whilst under Police protection because the Mafia were always tipped off by Police. Worth a read.