Sipowicz reports for the sergeant's exam and finds he is the oldest taker of the test. The detectives are on the scene of a death of the brother of a mentally disabled man. Medavoy makes small talk about the exam, which causes Sipowicz to leave with Clark and go up and talk with victim's brother Martin Schweiss. The interview with Martin doesn't go well; the brother thinks that his brother is with his girlfriend and he asks the detectives if they have any weed. Kathleen Halloran, the woman caring for the brother tells them what she knows about the victim's girlfriend, Elena Lozada, including the fact that the girlfriend they recently had a big fight with the victim about Martin. Jones and Medavoy are redirected to investigate an assault case. They arrive on the scene to find two tenants trying to move into the same apartment. They give Jones and Medavoy all the information they have on the man, Jerome King, who rented them the apartment, which the detectives are going to pursue.