"Antony Baekeland - Bakelite heir, killed his mother after she forced him to have sex with her to prove he wasn't gay. He got out of prison, only to kill his grandmother a week later and then gets murdered/suicide. A very interesting name to wiki.
Richard Chase - The Vampire of Sacramento. Warning: This article is graphic and reader discretion is advised. It is full of sexual content, cannibalism, murder and just about every other vial thing you can imagine. This man was completely deranged.