The Last One for Mom

S4 E2004/26/16
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Firehouse 51 unites to help a young boy in tragic circumstances; a high-powered political consultant helps Casey navigate a potential scandal; and Cruz makes a mistake that nearly costs him his life.

I Will Be Walking

S4 E1904/19/16
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Casey steps up to help a teenager being bullied by a gang; Severide bonds with a detective’s son after her life is threatened; and Kidd and Herrmann go head-to-head in a test of bar knowledge.

On the Warpath

S4 E1804/06/16
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Brett becomes a gunman's target after witnessing a murder; Casey faces his first tough test as alderman; and Mouch and Platt tie the knot.

Two T's

S4 E1602/23/16
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Casey's opponent fights dirty on the campaign trail; Mouch has a bachelor party; and Brett and Borrelli ease in as partners.

Bad for the Soul

S4 E1502/16/16
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51 welcomes a new firefighter; Borrelli joins Brett as a paramedic; and an accident at a neighboring firehouse causes suspicion.
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