Keith Kupferer

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assist the bomb squad with a dangerous call.

Severide gets wrapped up in an Illinois State Police investigation after discovering illegal guns on a call; a bird harasses Mouch on the apparatus floor; Kidd keeps an eye on Carver as his attitude worsens.

Michael sacrifices Fibonacci to Philly in order to restore Abruzzi as commander of the prison's work detail and put the escape plan back on track.

Pascal and Severide revisit the storage facility fire in hopes of uncovering new evidence; Cruz helps Mouch take his studying to the next level; Novak prepares a proposal for Chief Robinson for a whole blood programme.

Kidd strengthens her bond with Natalie during a road trip; Severide investigates a car fire and uncovers surprising evidence; Violet receives a career opportunity after being featured in a local newspaper.

Severide puts his job on the line to help out one of their own; Kidd navigates Natalie's complicated relationship with her sister; Herrmann prepares to take the Chief test.