When a street kid turns up dead on the dockside Leary is convinced that the young runaway was tortured to death by other kids and Sunny backs up his theory. The killing reminds Da Vinci of a tragedy in his past in which a police investigation proved fruitless. Determined not to let that happen in this case, Da Vinci pursues a suspect who may help him resolve whether police negligence was involved in the boy's death.

Da Vinci uncovers some disturbing information about one of the commingled bodies. Meanwhile, Kosmo finds more evidence that a cop may be involved in a drug dealer's death and Rose continues to help Shannon and Leary in their search for a killer.