The First 48: Innocence Lost - Episode Guide

Detectives in Tulsa, Okla., encounter a neighborhood under siege by young thugs after a man is killed in his home by a stray gunshot.

An investigator probes the tragic case of a teenager who was murdered at his family's roadside taco stand; an additional shooting added a complicated layer to the case.

A 14-year-old Cleveland girl dies at her own birthday party when gunmen fire on a crowd; homicide detectives race to track down multiple shooters in the crime.

A young woman is gunned down in the street while walking home from work; detectives work to find her killers.

The case of a young New Orleans mother who was shot after being ambushed at home hinges on the eyewitness account of a 4-year-old girl.