Yeah, in "Unfinished Business," Pistone goes all out for Devecchio and he was among the agents acting thug like in support of him during the abandoned trial...

"Unfinished Business" is worth reading but parts of it are half-assed, like he didn't even bother to research his own work (like when, and by whom, was Jilly Greca indicted) and there's a good bit of padding also... Too bad, because I would like more details on Donnie Brasco and his real insights into the Scarpa mess.