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  • Photo Credit: Murderpedia

1. A childhood surgery may have changed him forever

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  • Dahmer with his parents and his brother.

    Photo Credit: Murderpedia

2. Dahmer was obsessed with animal bones from a young age—an interest his scientist father encouraged

3. He drank alcohol throughout the day even in high school

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  • Dahmer's high school yearbook picture.

    Photo Credit: Wikimedia Commons

4. He committed his first murder just three weeks after graduating high school

5. He served as a combat medic in the U.S. Army

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  • Mugshot of Dahmer taken during his 1982 arrest.

    Photo Credit: Wikimedia Commons

6. Dahmer killed and stored the remains of up to four men while living at his grandmother’s house

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  • Dahmer's grandmother's house.

    Photo Credit: Murderpedia

7. Dahmer enjoyed the Exorcist films

8. He was in the process of building an altar out of the skulls of his victims when he was captured

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  • Dahmer's 1992 mugshot.

    Photo Credit: Wikimedia Commons

9. Dahmer became a born-again Christian while in prison

10. Lionel Dahmer wrote a book about Jeffrey after he was captured