The pretender : my life undercover for the FBI
(Book)

"The FBI generally has about 100 undercover agents working full-time in the field. In the 1990s and 2000s, Marc Ruskin had the most diverse, and notorious, case list of all, and the broadest experience within the bureaucracy, including overseas. He worked ops targeting public corruption, corporate fraud, Wall Street scams, narcotics trafficking, La Cosa Nostra, counterfeiting -- and gritty street-level scams and schemes. Sometimes working three or four cases simultaneously, Ruskin switched identities by the day: Each morning he had to walk out the door with the correct ID, clothes, accessories and frame of mind for that day's mission. And how is the right UC agent chosen, how is a bogus identity manufactured and "backstopped," how is the Bureau's long-term con painstakingly assembled? No one has ever given us the inside story like Ruskin. The Pretender is the definitive narrative of undercover ops -- the procedures, the successes, the failures--and the changes in the culture of the new-era FBI."--Jacket flap.