Former FBI Special Agent John Grusing on his new book, “The Devil I Knew”
The Denver Press Club 1330 Glenarm Pl, Denver, CO, United StatesJonny Grusing was a Special Agent (SA) with the FBI’s Denver Division from 1996 to 2021. For 23 years of his career, he worked violent crime matters to include missing persons, serial killers, federal jurisdiction homicides and mass attacks. From 2008 until his retirement, he served as the Behavioral Analysis Unit (BAU) Coordinator for the division. ... Read more