س. إيباثا ماركرسون

أفراد من فايرهاوس 51 ينقلون ضحايا تسرب غاز إلى منطقة شيكاغو ميد القريبة؛ مريض مسلح يزعم أنه يحمل مرضًا مميتًا ينتقل عن طريق الجو يجبر شيكاغو ميد على الإغلاق.

Intelligence joins forces with Firehouse 51 after a devastating high-rise fire is ruled arson. Halstead, who has a tragic connection to the fire, struggles to stay objective as he gets deeper into the investigation.

Dawson and Casey deal with a very unsettling possibility, while Severide receives an offer from an infamous party guy.

Firehouse 51 responds to the scene of a harrowing blaze that endangers the lives of many, including one of the Chicago family.

After zeroing in on a suspect responsible for bioterrorism, the P.D. prepares to undertake its biggest manhunt yet. Upton is torn between helping track down the perp and providing emotional support to a scared young girl who needs her.

When a young officer is shot dead in the lobby of an apartment building, Intelligence investigate and soon realise a trained sniper is deliberately targeting the police.