From drug smuggler to white-collar criminal to weapons dealer: My life as an undercover FBI agent

Through never-before-seen footage and in-depth interviews, "The FBI Declassified" takes you inside the minds of federal agents and analysts as they reveal how they solved some of the biggest cases of their careers. Watch Wednesday, August 18 at 10/9c on CBS.

When Special Agent Mike Gibeley decided to join the FBI and take down criminals, he never thought he would be posing as one himself. "I've been a large-scale cocaine supplier. I've been a drug dealer, a weapons dealer, a domestic terrorist." said Gibeley. "I spent my whole life trying to stay out of trouble to become an FBI agent. And the next thing I know, senior agents were telling me, 'hey, you'd be a good criminal.'"  For nearly 20 years, Gibeley has played a role in countless undercover operations at the FBI, blending in with mafia bosses and drug rings, all to combat crime from the inside.