Synopsis

A deliberate act of arson puts Lieutenant Severide in mortal danger. At the same time, the city's financial consultant, Gail McLeod, examines Station 51 with a critical eye, contemplating whether any firehouses should be deemed expendable. Mouch is visited by his girlfriend from Japan. Lieutenant Casey marks the somber one-year anniversary of Andy’s passing. And Shay finds herself increasingly suspicious of Severide’s paternal role.