: By the episode's end, Chief O'Neal learns of the investigation and remains in denial, while Sean becomes officially aware that Upton is coming for him.
This episode is widely noted by reviewers at TV Line and Telltale TV for its focus on Upton's mental state and the high-stakes conflict of investigating a superior's family. "Chicago P.D." Into the Deep (TV Episode 2022) - IMDb Watch Chicago PD S10E07 WEBRip x264-ION10 1
: Upton has been building a case against Sean in secret, suspecting he is running a sex trafficking ring targeting underage girls. : By the episode's end, Chief O'Neal learns
In , titled " Into the Deep " , Detective Hailey Upton is spiraling as she buries her grief over Jay Halstead's departure into a dangerous obsession with taking down Sean O'Neal , the son of Police Chief Patrick O'Neal. Key Plot Points In , titled " Into the Deep "
: The case stalls when Birdie, the primary witness, refuses to cooperate. Frustrated, Upton eventually confronts Sean directly, sharing personal details about her marriage to get a lead, though Sean remains elusive and "one step ahead".