Henry Fanello is a member of a gay bashing squad, Manhattan Killer Squad, known for their assaults of gay men with drugs to steal them and resell them. When two gay men in the "party and play" scene were murdered, the team set up a sting and eventually found Fanello outside a club, beating another gay man, leading to the detectives arresting Fanello on suspicion of murder.
Fanello, a repeat offender recently becoming a legal adult, bragged about his crimes and how gay men are too afraid to report. When he was confronted with murder, and his tattoo of "killer" being the same vandalism at the scenes here the men were murdered, he denied everything. Fanello and the rest of MKS were exonerated when their motive for the bashings didn't match the murder. (SVU: "Strain")