Mouch considers hanging up his helmet for good; Herrmann hopes to cheer up an ailing child; tension erupts between Casey and Dawson when her father overstays his welcome.

A dangerous warehouse fire puts truck and squad at risk. Tensions are high for Dawson (Monica Raymund) and Casey (Jesse Spencer) when Dawson's father (guest star Daniel Zacapa) overstays his welcome at their home. Meanwhile, Casey contin...

Kannell becomes the newest member of Firehouse 51, Mouch considers hanging up his helmet, Dawson's father makes a surprise visit and Cruz faces suspension or even dismissal from the CFD.

CRUZ FINDS HIMSELF LOOKING AT A POSSIBLE SUSPENSION - Cruz (Joe Minoso) finds himself in a bad spot when an off-duty incident begins to unravel, prompting Mouch (Christian Stolte) to step in and offer help in hopes of avoiding serious co...

Severide looks on as Anna fights for her life; Casey helps clear Kannell's reputation; Brett tries to convince Cruz and Otis to let her move in with them.

Casey takes drastic measures to help Kannell.