8x11- Who's There?

Background:
It can be inferred that Danny grew up on Staten Island, in a family under surveillance (as hinted at in the episode "Tanglewood"). As a result, he formed his own set of hybrid ethics, caught between the world of lawbreakers and law enforcers. Though very little is known about the Messer family, Danny openly admits that he has had a very rocky relationship with his older brother, Louie, since a fateful night in 1991. After promising to take Danny to Atlantic City with some of his friends, they stopped off at Giants stadium where Louie and two others began to severely beat a drug dealer,...