Nick Jandl

Casey and Severide find themselves at odds after Casey argues about how to save a teenager entangled in barbed wire; Otis tries to convince Casey to participate in the beta test for an expensive piece of new firefighting equipment.

Max is brought to Angels Memorial with breathing difficulty; Willis decides to get to the bottom of what happened to his brother's unit.

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; Rayna deals with the aftermath of Deacon's liver transplant.

When Juliette becomes so focused on her album that she puts it ahead of everything else, Avery makes a major decision; Rayna and the girls stand by Deacon as his life hangs in the balance.

Maddie receives an offer that Rayna wants to turn down; Luke desperately tries to regain Colt's trust; Gunnar's girlfriend causes problems with Scarlett; in need of money, Avery works on insipid jingles.

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