S9, EP8 "Escape Route"
A call to a familiar location brings back mixed emotions for Severide; Herrmann heads out for a vacation; Casey is not thrilled with his replacement.
S9, EP7 "Dead of Winter"
A fire at a homeless encampment leaves Severide and Casey searching for answers; Cruz is shaken up after a close call; Ritter lends a helping hand to a victim.
S9, EP6 "Blow This up Somehow"
Gallo makes a split-second decision during a dangerous fire rescue, leaving Casey steaming that his direct orders weren't obeyed; Kidd feels a strain in her relationship with Severide; Brett and Mackey search for answers after some suspicious calls.
S9, EP5 "My Lucky Day"
When Firehouse 51 is called to the scene of a dangerous blaze inside a 10-story storage unit, Herrmann and Cruz find themselves trapped inside a freight elevator with all communications cut off.
S9, EP4 "Funny What Things Remind Us"
While completing a task assigned by headquarters, Boden makes an unforeseen connection; Gallo is forced to make a surprise rescue of one of their own when the firehouse is called to the site of a construction explosion; Mouch reignites an old feud.
S9, EP2 "That Kind of Heat"
Brett and Mackey find their lives in peril; Casey and Brett tread in unfamiliar territory; Severide chases a memory while Kidd adeptly solves a firehouse problem; Ritter puts himself in harm's way during a harrowing call.
S9, EP1 "Rattle Second City"
As Firehouse 51 welcomes a new member to the team, whose presence could provide some complications, Brett's leadership shines during a scary call; Boden sees great potential in Kidd and proposes an idea that could have lasting repercussions.