A shop owner, before opening up his store, figured out a seventeen years old kid was lying before the shutter, shot in the chest. Bums living there were not so clear to detectives. Luckily the victim managed to survive but he lied to police about what happened to him (two assumed black guys assaulted him, stealing his car). Actually, a teenage girl (his girlfriend) bought condoms at a local pharmacy and the receipt were still inside the stolen car: unfortunately she was killed as well that night. The right path involved a drug dealer, the young kid has just been a small fish. But the boy still hid something to the police, he was actually a snitch called "Mr. Weekend" by his peers who received a better treatment from a previous arrest under duress.
Detectives and lawyers had hard times in dealing with a fellow detective (José Zuniga) not so cooperative, because he had strong ties with the defendant. McCoy compelled Lennie to testify against his real will.