Rae Gray

Severide realises he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay.

As Bull prepares for fatherhood, his work at TAC suffers without his top attorney Benny, who quit in reaction to Bull's romantic reconnection to Isabella; the team must mount a defence for a young bartender on trial for involuntary manslaughter.

A new threat reveals itself to Madison and Troy as they search for answers. Alicia must reconcile with her past decisions.

News of incoming danger spreads throughout the community as Madison struggles to keep everyone together. Nick grapples with a hard truth.

Leonard is forced to face some insecurities when his case leads him to consider right and wrong. Meanwhile, Sandra takes on Seth, who files charges against a comic.

Still finding their place, Alicia and Nick fall in with new crowds while Madison discovers Otto's past mimics that of her own.