Retired agent Tym Burkey served 20 years with the FBI. While in the Cincinnati Division at the Dayton Resident Agency, he worked violent crime and domestic terrorism matters and was assigned a case targeting the Aryan Nations, which at the time was considered to be the most dangerous white supremacist group in the United States. In this episode of FBI Retired Case File Review, Tym Burkey reviews how his informant Dave Hall infiltrated the violent neo-Nazi organization. The intelligence gathered by Hall lead to the disruption and dismantling of the Aryan Nations’ leadership. Later in his career, Tym Burkey began working counterintelligence investigations and was transferred to the Albuquerque Division where he was assigned to the Sandia National Laboratories and supervised the Albuquerque Joint Terrorism Task Force (JTTF). After retiring from the FBI, Tym Burkey co-wrote with Dave Hall a narrative account of their Aryan Nations case. Their book, Into the Devil's Den: How an FBI Informant Got Inside the Aryan Nations and a Special Agent Got Him Out Alive, is a true-life thriller and a testament to bravery, dedication, and friendship. It’s also a timely reminder that America’s homegrown terrorists can be just as deadly as those from overseas.