When he was 15, Edmund Kemper shot his grandparents, curious about what it would feel like to commit murder. A stint in a maximum-security prison hospital did little to cure him; after his release at age 21, his urge to kill led him to a new target: college girls.
Fair warning: Potentially unsettling images after the jump. Then again, you're reading a post about necrophilia; what did you expect? No judgement. Just saying.
The eponymous bad guy of 1966 Italian exploitation flick The Embalmer has the best mad scientist pervert speech I have ever heard. He's explaining how he "preserves" the beautiful ladies of Venice, and gets a little foot fetish action too.