Chicago Fire

Firehouse 51 works to regroup after a tragedy strikes.

The Firehouse struggles with Darden's death.

Casey is pressured to cover up for a drunk driver.

Chief Boden faces allegations after the death of a homeless man in a warehouse fire.

Voight's harassment towards Lieutenant Casey escalates.

An out of control apartment building fire finds Casey laying it all on the line.

Thanksgiving proves to be a busy holiday for the firehouse - including a visit to a meth lab, a gang shooting and a 10-car pileup.

A train accident leaves Mills doubtful about his future as a firefighter.

An injured firefighter faces life after the job.

Firefighters face theft accusations and an investigation.

Cruz struggles with guilt over Flaco's death.

Severide (Taylor Kinney) faces the consequences of his injury -- and an uncertain future.

Chief Boden tries to remedy a situation involving a suspected teenage arsonist and Severide makes an important decision.

Tensions rise when Severide (Taylor Kinney) crosses paths with someone from his past.

Dawson puts herself in danger to help her brother.

Cruz's torment jeopardizes his fellow firefighters.

Past tensions resurface between Chief Boden and Bennie Severide.

Mills pushes to learn the real story of his father's death -- Treat Williams guest stars.

A firehouse rescue call leaves a lasting impression.

Mill's drive to join Squad creates friction within the Firehouse.

Serveride is met with unexpected news, as Voight returns.

Severide pulls out all of the stops in hopes of resolving his problems.

Casey learns that old habits die hard when he is left to deal with Voight.

A call to the local penitentiary places the squad at risk.