As the team works to solve a deadly shooting in Burnside, Atwater realizes he has a very personal connection to the case.

Air Date: Wednesday, Oct. 20 (10:00PM – 11:00PM) on NBC.

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CHICAGO P.D. -- "Burnside" Episode 905 -- Pictured: Marina Squerciati as Kim Burgess -- (Photo by: Lori Allen/NBC)