In Season 9 of “Chicago P.D.,” Halstead catches wind that something isn't right with Upton, forces Voight to tell him the truth, and ends up punching the older man in the face after learning it. Pressure is mounting, and eagle-eyed fans have appreciated how the show handles the situation with subtle detail.
Season 9, Episode 5 sidelined much of the Upton storyline, which means things are bubbling under the surface, to fans' delight. “For once, the writers are doing a great job showing the distance between the two," one fan wrote on Twitter.
Others feel that the current tension is merely the calm before the storm, and things will explode before long, with potentially drastic results for Voight. Another fan tweeted, “The next few episodes are going to be so good! I'm ready to see the rest of the team turn their backs on Voight,"