Christian Stolte talks about Mouch's budding relationship with Desk Sergeant Trudy Platt.
Severide is back in town and reaches out to Lindsay from Chicago PD about getting together soon.
During a rescue, Mills passes out and needs to be rescued himself.
Stuntmen Tobiasz Daszkiewicz and Bayland Rippenkroeger explain the safety and training involved in a dangerous jump from "Santa Bites."
A couple get trapped in a house fire, leading to a perplexing aftermath. Meanwhile, Chief Boden prepares to start his new family the stresses of life and work push Casey and Dawson apart and Molly's II gets an opportunity to shine at a holiday fest.
Led by Chicago P.D.'s Detective Lindsay, the station searches for a known criminal seeking revenge on Severide.
Yuri Sardarov, who plays Otis, discusses the upcoming drama in Chicago Fire's third season.
Special effects supervisor John Milinac explains how they simulated two fire trucks crashing in the episode "Just Drive the Truck."
When Donna goes into labor early, Boden and Severide must perform an extra-special special delivery.
A major explosion occurs at Chicago Medical, where Casey and Dawson are volunteering at a charity run.
Chief Boden bounces back from an earlier rejection and proposes to Donna from the heart.
Dick Wolf explains the daunting - but satisfying - task of linking Chicago Fire, Chicago P.D. and Law & Order: SVU to a single story.
Christopher's new business almost takes out some potential customers.
Charlie talks about how its like shooting a movie.
Yuri and Joe talk about how fortunate they are to be able to do this for a living.
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