This was the first episode since Jon Seda made his departure from the Chicago universe, as he only moved over to Chicago Justice during his brief break from P.D., and his absence combined with an intense argument between Halstead and Voight could mean trouble for the team moving forward.
There’s a void left in Intelligence without Antonio; can Halstead fill it?
Although Chicago P.D.’s premiere was the least deadly of the three Chicago series on NBC, “Doubt” set the stage for some big ongoing changes in the Intelligence Unit.