Season 4 Episode 6
Boden is accused of a horrific crime by a new neighbor; a gang member from Cruz's past seeks his help getting out.
51 continues to chafe under Captain Patterson's leadership, with Severide (Taylor Kinney) taking the worst of the brunt. Later, when Severide disobeys a direct order from Patterson in the heat of a crisis, he faces harsh consequences as a result. Patterson wants Severide gone, but Boden (Eamonn Walker) refuses.
Chief Riddle continues to have it out for Boden, and tells Patterson he hopes he's ready to "step up" as Battalion Chief.
A neighborhood fire leads to Mouch (Christian Stolte) being offered tickets to a Rush concert; the family 51 helped save was that of a roadie from the band. This leads to Mouch, Casey (Jesse Spencer), Otis (Yuri Sardarov) and Herrmann (David Eigenberg) meeting the band backstage (cameos by lead singer Geddy Lee and guitarist Alex Lifeson).
A gang member from Cruz's (Joe Minoso) past seeks his help in getting out, which leads to the gang member being offered refuge at the firehouse.
The relationship between Chili (Dora Madison) and Borrelli (Steven R. McQueen) heats up.
Boden's attractive new neighbor asks his help in getting into her locked apartment. He assists her by kicking down her door, and the two share an awkward moment inside. Later, in a shocking cliffhanger, the woman mysteriously accuses Boden of assault... and has photos that would seemingly back up her claim.
NASCAR driver Carl Edwards also cameos as a pizza delivery man.