The One Chicago fall finales left Us with a lot of questions after putting multiple lives in jeopardy and teasing a Firehouse 51 shakeup that could change everything.

Chicago Med, Chicago Fire and Chicago P.D.’s respective Wednesday, November 12, cliffhangers have many fans reeling — and we’re explaining them all.

Med kicked off the night by teasing a possible love triangle before diving into a darker story line involving Dr. Caitlin Lenox (Sarah Ramos) and a former patient.

Fire put Kelly Severide (Taylor Kinney) back in touch with his fire investigation self, while one of the rigs in Firehouse 51 faced closing down permanently.

One Chicago’s Most Heartbreaking Exits

P.D., for its part, focused on how a new case could be linked to a past killer — and his deranged father.

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