Daniel Kyri

د. "تشارلز" ود. "ريس" يبحثان عن إجابات حين تحضر أم ابنتها وتدعي أنها ممسوسة. د. "رودز" ود. "بيكر" مكلفان بالحفاظ على حياة توأم متصلان. د. "هالستيد" يبذل ما في وسعه لجذب انتباه د. "مانينغ". "ماغي" تدرس خياراتها بعد تصرفاتها الأخيرة.

Kidd must prove herself at the National Firefighter Leadership Conference, while the rest of Firehouse 51 is called to two eerily similar car wrecks. Mouch tries to keep the firehouse informed by starting a newsletter and Cruz deals with a heartbreak.

Casey and Severide disagree on a call, while Boden starts a diet and Brett's birth mother shares life-altering news. A familiar face has a proposition for Herrmann.

Members of Firehouse 51 are dismayed to learn their boundaries have been redrawn to overlap with an adjacent station, and problems quickly arise. Casey and Gallo hunt a missing piece of equipment. Brett and Foster find themselves at odds.

A pest control problem forces the 51 team to temporarily bunk with Firehouse 20. All under the same roof, Casey clashes with Capt Delaney, while Foster, Kidd and Brett fear Capt Leone has it out for them. Boden mulls a procedural overhaul.

A rare but deadly bacteria takes its toll on numerous victims around the city, leaving Chicago's finest first responders to work together alongside the CDC to resolve the dangerous situation. Severide suspects something bigger is happening.