Dancing with the devil

"Growing up in Red Hook, Brooklyn, where physical violence was a daily reality at home, at school, and on the streets, Louis Diaz had what it took to survive--and to one day become what he vowed to be: a man of uncompromising principles who is 'compassionate on the inside, fierce on the outside.' These were the qualities, along with his street fighter's steely nerves and hair-trigger temper, that drove Diaz from his savage beginnings and early forays in organized crime to become one of the DEA's bravest undercover agents--the man who was instrumental in bringing down some of the nation's and the world's most notorious crime rings..."--P. [4] of cover.