In the Season 7 premiere, titled " Doubt ," the Intelligence Unit deals with the immediate aftermath of Mayor-elect Brian Kelton’s murder. The episode serves as both a resolution to the Season 6 cliffhanger and a departure for a original cast member. Key Plot Points
: Hank Voight is initially the prime suspect because his SUV was spotted near the crime scene. However, the investigation eventually shifts toward Katherine Brennan , Kelton's former right-hand woman, who is revealed as the killer. Chicago_P_D_s07e01
: While actor Jon Seda does not appear, his character’s departure is addressed offscreen. Voight reveals he was helping Antonio get to an off-the-books clinic to deal with his drug addiction, which explains his whereabouts during the murder. In the Season 7 premiere, titled " Doubt
: Adam Ruzek begins the season in custody, having been stripped of his police powers after taking the fall for Antonio’s actions in the previous season. He is eventually bailed out by Voight. Cast & Guest Stars Chicago P.D.: Season 7, Episode 1 | Cast and Crew : Adam Ruzek begins the season in custody,
: A central conflict arises when Voight attempts to give Brennan an hour to get her affairs in order before her arrest. Jay Halstead defies these orders, storms her apartment, and prevents her from committing suicide, leading to a tense confrontation where Voight tells Halstead to "get the hell out" if he doesn't trust his methods.
