: The episode ends with a chilling discovery at a Wisconsin cabin linked to Sean O'Neal, where the team finds human remains, setting up the mid-season finale. "Chicago P.D." Under the Skin (TV Episode 2022) - IMDb
In an attempt to derail the investigation into his son, Sean O'Neal, Chief Patrick O'Neal assigns the Intelligence Unit a trivial "dead fish" case. The investigation quickly escalates into a high-stakes "heater" case involving a serial killer who tortures victims, which triggers suppressed trauma for Officer Kim Burgess. Chicago.PD.2022.S10.E08.1080p.HDTV.AC3.iTALiAN....
: Despite the Chief's interference, Detective Hailey Upton continues her secret investigation into Sean O'Neal. : The episode ends with a chilling discovery