Medavoy leaves his wife and tells Donna about his feelings for her, which it turns out are mutual. An academy classmate of Kelly's joins the squad; then Sipowicz and Kelly investigate the death of her husband, whom was an ex-cop trying to stop a robbery on her first day at the 15th precinct. An alcoholic woman keeps lodging complaints with Kelly against her husband that she never follows through with, later she confesses to killing him.