It's possible no one would have known that Richard Biegenwald was a serial killer if he hadn't shown a dead woman's body to a friend he wanted to enlist as a murderous protege. Once police started digging into Richard Biegenwald, they uncovered decades of horrific crimes -- many of which he said he committed just for the thrill of it.

"Crimes of the Centuries" is a podcast from Grab Bag Collab exploring forgotten crimes from times past that made a mark and helped change history.

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