In early September 1961, two
Winter Hill associates of McLean, and their friend,
Charlestown mobster
George McLaughlin rented a cottage on
Salisbury Beach for a
Labor Day party. Drinking with his friends throughout the day and into the late evening, McLaughlin attempted to grope one of the gangster’s girlfriends. Confronted by the two men, McLaughlin received a savage beating until losing consciousness. Unsure whether or not he was still alive, they dumped him at a nearby hospital and went to tell McLean what had happened. McLean told them he would take care of it and had a talk with his friend, and George McLaughlin's brother,
Bernard "Bernie" McLaughlin. When McLean learned that Bernie McLaughlin wanted to take revenge and sought McLean's help in doing it, McLean told him his brother had been out of line and had the beating coming. Bernie McLaughlin stormed out in a rage. Later that night, McLean awoke to the sound of his dogs barking, and saw two men under his car. He chased the men off by firing a
Luger pistol at them, and found sticks of
dynamite wired to the ignition of his car. Suspecting the McLaughlins, he began stalking Bernie McLaughlin throughout Charlestown until he found him. He killed Bernie McLaughlin walking out of the Morning Glory bar in Charlestown in broad daylight and in front of almost one hundred witnesses on October 31, 1961. He was originally arrested along with Alex Petricone but the witness who picked them out later recanted and they were released. Alex Petricone, who was not a killer, was sent out to California by McLean to stay out of the gang war. Petricone started taking acting lessons, changed his name to
Alex Rocco and became an actor. One of his first roles was playing
Moe Greene in
The Godfather movie. McLean became an
informant for the corrupt
Federal Bureau of Investigation (FBI) agent
H. Paul Rico. Rico was offended when he heard Charlestown gangsters refer to him and his boss,
J. Edgar Hoover, as "fags" on an illegal
wiretap. As a result, Rico felt animosity towards the McLaughlin gang and leaked information to members of the Winter Hill Gang which allowed them to track down and kill Charlestown gangsters. In an attempt to kill McLean, the Charlestown gangster Ronald Dermody accidentally shot another man. Dermody then arranged a meeting with Rico in
Watertown on the night of September 4, 1964. Instead of meeting with Dermody, Rico alerted McLean to the prearranged meeting place. McLean arrived and fatally shot Dermody three times as he sat in a parked car. Rico then picked up McLean at the scene and harbored him at his home in
Belmont for a number of days. ==Death==