I found it on this site:

http://thewatchseries.to/serie/american_lawmen

But only episode 1 is available for now, hopefully episode 2 will be available very soon.

Petrosino vs The Mafia, is the title of episode 2 btw, so it will cover more than just the Morellos I reckon.
Looks very good btw in my opinion..

EDIT: Is that Fat Dom Gamiello btw in that scene with the toothpick in his mouth?? I think it is LOL