Nick Jandl

Casey and Severide find themselves at odds after Casey argues with him over the best way to save a teenager trapped in barbed wire.

The team partner with `The Sherlocks', a private investigation team, to investigate the murder of a petty officer outside DC.

Juliette hits a career high, including singing a duet with Steven Tyler, but her personal life plummets. Avery takes care of baby Cadence at his parents' home in Texas and Rayna deals with the aftermath of Deacon's liver transplant.

Deacon is consumed with guilt when an additional aneurysm leaves Beverly brain-dead. Juliette's erratic behaviour forces Avery to file for divorce.

The Grand Ole Opry honours Rayna on a special anniversary, so she asks Deacon and her daughters to sing with her.

Jeff's career takes a tumble thanks to Rayna. Meanwhile, Sadie confides in Rayna about her ex-husband; Deacon contemplates participating in a clinical trial for an alternative treatment; and Scarlett and Gunnar bond as they both focus on writing.