Jonny Grusing

The Devil I Knew: Unmasking a Serial Killer

“There’s a truth to everything I said, Jon. This is a puzzle. You have to figure it out.”

The puzzle included numerous murders across the western United State

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• Author: Grusing, Jonny
• Binding: Paperback
• Page Count: 360
• Publish Date: September 14 2025
• ISBN10: 9798999564504
• Language: English