There have been many films, television programs and even documentaries about undercover police work. But most of them fall very short of what the reality of such a job is like.
Michael Kaminski actually lived that life as an undercover detective in the city of Baltimore in the 1970's.
He submerged his true self into different false identities to get close to drug dealers and leaders of criminal gangs in order to set them up to be arrested.
Kaminski says, "I had three different names, three different social security cards from three different states, and I was three different people. I had three contracts on my life when I left the police department."
Mike Kaminski now lives in Pennsylvania, and has written a book about his experiences called Life After Russian Roulette, available at Amazon and Barnes and Noble.
Kaminski appears on Thursday's Smart Talk to share stories from his life - some of which are brutal, harsh and violent.
He also shares how that lifestyle transformed him