I found this book about a week after I listened to a podcast episode. This guy was a weirdo. Nilsen was a serial killer who murdered at least twelve boys. He was active in England in the late 1970s to early 1980s. After luring boys to his home, he murdered them and kept the bodies for extended periods of time. How his neighbors didn't report him many times over for smells of decomposition, I will never understand. He finally got himself caught after flushing body parts down the toilet and causing a clog, in which they determined came from the weirdo on the top floor. This was a pretty good book, and learning about his activities in more depth was interesting.