Griffin learns the truth about his father’s death and reveals why he really came to visit Casey.

Gallo, Ritter and Violet take steps to expand their microbrewery business.

Air Date: Wednesday, Oct. 6 (09:00PM – 10:00PM) on NBC.

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CHICAGO FIRE -- "Counting Your Breaths" Episode 1003 -- Pictured: (l-r) Joe Minoso as Joe Cruz, Taylor Kinney as Kelly Severide -- (Photo by: Adrian S. Burrows Sr./NBC)

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