S1·E15 Internal Affair

After answering a 10-18, burglary in progress, Chris returns fire on, and kills, one of the delinquents trying to drive away. The other felon disappears, as well as gun belonging to the criminal whom Chris shot at. Now all the evidence of the deceased boy being armed is gone and, to make matters worse, a video tape also makes it look like Chris fired alone. Meanwhile, the dead boy's mother seeks revenge against Lorenzo.