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Nancy Glass' definitive interview with Jeffrey Dahmer becomes even darker as they discuss the most shocking aspect of his crimes -- cannibalism -- and dive even deeper into the mind of the world's most notorious serial killer.

Dahmer on Dahmer: A Serial Killer Speaks

Part Two

New revelations shed light on the grisly case of Jeffrey Dahmer.

Part One

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Inside the mind of America's most notorious serial killer, Jeffrey Dahmer; new revelations and never-before-seen interviews shed light on the grizzly and twisted case, told firsthand from those closest to Dahmer, including family.

S1 E1 | Part One

E2 | Part Two

E1 | Part One