In the thirteenth episode of Chicago P.D. 's ninth season, " Still Water ," Officer Hailey Upton faces a profound ethical dilemma after diving into a freezing river to save a woman from a car crash. The investigation reveals the rescued person was actually a victim of an abduction, forcing the intelligence unit to track down the dangerous suspect while navigating the emotional aftermath of the incident. You can find detailed discussions and information about this episode on the Chicago P.D. Wiki and IMDb . "Chicago P.D." Still Water (TV Episode 2022)