Will That Slow-Burn Romance Finally Ignite & More 'Chicago Fire' Season 9 Qs

Meredith Jacobs
Chicago Fire Season 9 Questions 51 Characters Relationships
Adrian S. Burrows Sr./NBC

Chicago Fire may have ended its eighth season earlier than expected, but the 20 episodes we did get gave us plenty to speculate about while we wait for the NBC drama to return.

As always, the first responders' personal and professional relationships are at the center of the loose threads for what's to come. Will the slow burn romance between paramedic Sylvie Brett (Kara Killmer) and firefighter Matt Casey (Jesse Spencer) finally heat up? What will Firehouse 51's new addition after a series regular exit mean for the remaining characters?

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Scroll down to see what we're most curious about for 51's heroes (past and present).

Chicago Fire, Season 9, TBA, NBC