Chris Gehrt

The investigators probe what appears to be gang-related gunplay in a hospital emergency room, then discover a cheating girlfriend may be the catalyst for the shooting.

Stars and executive producers review unforgettable moments; a traumatic event brings the gang together.

When budget cuts threaten to gut Whitlock and put his job in danger, Jack recruits Mary, Stef and Michelle to take down the superintendent. Durbin plots an appeal to the heart, while the students organise an appeal to the soul.