15 Actors Who Played Real-Life Killers in Movies (PHOTOS)

What could be scarier than a horror movie villain? A real-life killer like Jeffrey Dahmer or Scott Peterson. Their motivations and murders have long been portrayed in Hollywood movies, and plenty of actors have eagerly signed on to explore these men's bottomless darkness.  


Here are 15 actors who took on the grisly job of getting into a killer's head long enough to play them in movies. How they came back from that we'll never know.

Image via Sunset Boulevard/Corbis

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