KIDD DIGS DEEPER INTO THE CAUSE OF A FIRE

Julia spends a couple of days at 51.

Boden’s stepson, James, returns desperate for Boden to help his mother.

After a little girl starts a fire in her backyard, Kidd and her team decide to dig deeper.

Air Date: Wednesday, February 7 (9-10 p.m. ET) on NBC.

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CHICAGO FIRE -- "The Little Things" Episode 12004 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Kim Shaw as Alicia -- (Photo by: Adrian S Burrows Sr/NBC)