Fernando was a drug dealer who was forced to kill a young boy after his partner murdered the rest of his family. They were killed over a faux drug deal.
Tito and Fernando broke into the Veneza family's house and Tito held the father's head underwater to make him admit to where his stash of $35,000 was. However, as he was doing so, he died. Tito panicked and drowned the rest of the family before forcing Fernando to drown the youngest son, a three-year old boy. Fernando couldn't do it, and he was stashed at Fernando's house. During interrogation, Fernando confessed that the son set up his father to be robbed of his cash, but since Tito killed him by accident, he had to kill the rest. Fernando also said he had nothing to do with the killings and pleaded to stay out of jail. However, it's highly unlikely that he was.