Billy gets in with a questionable crowd. Isaac travels alone. Harris’ investigation into the anonymous eyewitness continues as a high school football player ODs.

Harris races the clock in his search for the anonymous eyewitness. Lee seeks professional advice about whom to protect. Harris’ old Pittsburgh PD partner pays him a visit.

After a heroic rescue lands her in the hospital, Mare awakes to the unshakeable pain of losing a friend. Then, given a second chance by Chief Carter, Mare reevaluates old…

When the squad’s rig breaks down in the field, Casey reunites with his old friend and colleague Jason Kannell from Squad 6. Dawson and Brett serve their time in retraining….

Halloween is in full effect for Foster and Brett, who are summoned to a home where a prank has quickly turned serious. Gorsch continues his reign of terror on Firehouse…

Boden offers to host a wedding at the firehouse after a fire destroys the original location, but it doesn’t sit well with Chief Riddle, who also butts heads with Dawson…

With most of the squad still trapped inside the burning warehouse fire, Chief Boden makes a risky last-minute decision in an effort to save his men. Dawson continues to deal…

Boden forces members of Firehouse 51 to pull themselves back together in the aftermath of a harrowing fire explosion. While Severide goes missing for one week too many, Casey works…

A suicide note is delivered to a surprised Dawson and Lt. Severide digs deeper into Bloom’s dark past. Elsewhere, Chief Boden learns shocking news, and with the help of Shay,…

Captain Gregson lobbies to include Holmes and Watson when his unit is selected to receive a city commendation for its exemplary work. Also, as Holmes and Watson consult on the…

Ellen gets some bad news from her parents. Arthur Frobisher and his team do everything they can to keep things going their way while a witness remains missing.

Ellen gets some bad news from her parents. Arthur Frobisher and his team do everything they can to keep things going their way while a witness remains missing.

Watch Video A flirting patient named Andrea causes a male nurse to feel uncomfortable, even though he feels the connection. Later, the same male nurse must treat a woman who…

Mining magnate George Hearst arrives while the camp is preparing for a celebration. Yankton officials react to a Swearengen power play. Violence erupts among the town’s Chinese population.

Nick and Keppler investigate the bizarre world of the black market sales of body parts after they find a body that has been burned and the organs removed. The rest…

In Milwaukee, a series of women have been found murdered with their hearts crudely removed. The BAU is assigned to the case, but they are short three members: Gideon, who…

In Milwaukee, a series of women have been found murdered with their hearts crudely removed. The BAU is assigned to the case, but they are short three members: Gideon, who…

As the holiday’s approach, Kelly and Sipowicz get a early gift in the form of a hot tip while investigating the kidnapping of a young girl.

As the holiday’s approach, Kelly and Sipowicz get a early gift in the form of a hot tip while investigating the kidnapping of a young girl.

Ben worries that a casual conversation with Derek could potentially cause issues for Bailey, Cristina turns to Shane as tension grows with Meredith, and April’s upcoming wedding makes for an…

Sipowicz tries to get a confession and capitalizes on a mistaken identity. Lt. Fancy’s brother is falsely accused of accepting bribes and Simone is able to uncover the truth behind…

Lowell and Bunny make their separation final by signing the divorce papers only to start sleeping together again. Meanwhile, Antonio consoles a woman who’s cheating husband left his cellphone in…