Jonny Grusing spent 25 years in the FBI’s Denver Division, including more than a decade as the Behavioral Analysis Unit Coordinator. He now serves locally as Director of Safety and Security for Douglas County Schools.
He was the lead agent investigating Scott Kimball, the convicted Colorado serial killer whose case stunned investigators when they learned Kimball had been serving as an FBI informant while secretly committing murders.
Grusing is now sharing the inside story in his new book, The Devil I Knew: Unmasking a Serial Killer.