They definitely had their doubts about him but most likely disregarded them after seeing how brutal he was, and didn't the FBI wouldn't allow that...We know better now
That had to be the reason Persico and others did not believe it. They had no idea the FBI would allow a guy to be out killing people, and doing all those robberies, while working for the FBI. The Scrapa story is amazing, more amazing is he had 2 consecutive FBI handlers who let it go on for almost 30 years.
