If you want a good read, then get See No Evil the book about the man that lived a double life. One as a highly respected surgeon that was well known in his field and the other as a mafia doctor. His entire life built up to the moment both forces collided in the form of a man on his operating table that the US gov't had a star witness against many heads and important people of the five mafia families and the mafia itself had ordered the doctor to kill this man on the operating table.