Kris D. Lofton

Atwater (LaRoyce Hawkins) is settling into his new gig on intelligence as Antonio (Jon Seda) is relegated to desk duty while recovering. Lindsay (Sophia Bush) finally realizes she has no way out and confides in Voight (Jason Beghe) for help. Meanwhile Jin (Archie Kao) is confronted about his secret meetings with Stillwell (guest star Ian Bohen). It all comes to a head in the season finale.

Tragedy strikes when a rescue attempt at a tenement building proves unsuccessful, leaving the men and women of firehouse 51 affected by the loss of the victim. Severide's decision to put Mills on the fast track to move from Truck to Squad doesn't sit well with some of the others and tension mounts between Severide and Casey over Heather Darden. Shay and Dawson are forced to deal with a junkie's crazy behavior while on a call and Shay considers a different way to have a family. Meanwhile, the team draws the ire of local drug dealers who threaten the peace and safety of the neighborhood and firehouse.

When the squad's rig breaks down in the field, Casey (Jesse Spencer) reunites with his old friend and colleague Jason Kannell (guest star Kamal Angelo Bolden) from Squad 6, whose crew gets assigned a temporary change of quarters until the rig issue is resolved. Dawson (Monica Raymund) and Brett (Kara Killmer) serve their time in retraining, both tackling the class in unique ways. Severide (Taylor Kinney) tries to remedy what is going on with Anna (Charlotte Sullivan) and finds support from unlikely sources. As Connie (DuShon Monique Brown) returns from her family engagement, the crew lays bets on how long her temporary replacement Marcy (guest star Mia Hulen) will last.

Desperate to score a key owner's blessing to bring pro football to Vegas, Spencer and Joe find themselves in a race against the clock involving a pair of equally critical meetings. Spurned by his new teammates, Ricky stages his own private workout, and finds roses aren't enough to appease an angry Amber. Vernon looks for a second chance; tensions between Charles and Larry escalate after a tryout for Kisan.

In Las Vegas on business, Spencer gets reacquainted with Chloe, an old flame now working for Wayne, while Ricky challenges the odds in a game of dice. Set up by Joe to represent Kisan, a top running back, Jason ends up sweating it out in a tough neighborhood. Charles gets a public-speaking primer from Julie; Vernon and Reggie make a risky endorsement deal.