The police find themselves investigating one of their own when Lt. Van Buren shoots a young intellectually disabled boy at an ATM. She's certain that one of the boys had a gun and Capt. Dennis Burnett tells everyone to stay out of the investigation but Detectives Lenny Briscoe and Mike Logan can't help but look into the case. They find the second boy, Zack Rowland, and McCoy for his part takes the case to a grand jury who refuse to indict Van Buren. She's not happy however because a non-indictment isn't the same as being found innocent. When Logan and Briscoe find the gun Zack used, they have to find a way to prove he had it in his possession.
—garykmcd