Kamal Angelo Bolden

When the squad's rig breaks down in the field, Casey reunites with his old friend and colleague Jason Kannell from Squad 6.

After a teenage girl makes a rape accusation against a person with a criminal record, but little evidence is found, the girl's father takes matters into his own hands.

A warehouse blaze puts the fire and rescue squad at risk, Dawson's father overstays his welcome at Dawson and Casey's home, Casey fights for his first responders bill, Mouch makes a serious decision, and Herrmann tries to make a young boy smile.

Casey goes all out to help an old friend, Severide realises some home truths, and Dawson and Brett get crafty to save a young girl.

Cruz finds himself in a bad spot when an off-duty incident begins to unravel, prompting Mouch to step in and offer help.

Ongoing tensions between Molly and Issa threaten to resurface during a trip to Malibu for Kelli's birthday, and Lawrence reconnects with his friends.