Brett and Foster question the suspicious circumstances surrounding an attack at a juvenile detention center. A convoluted new technology at Firehouse 51 tests everybody's ...

Casey struggles to get Boden to sign off on an energetic new recruit. Foster extends an olive branch to her irritating new medic. Otis inspires Herrmann to seek new partn ...

The mattress factory fire spirals out of control. Truck and squad lay it on the line in hopes of getting the trapped victims out alive. ...

Casey struggles with his personal life; the firehouse welcomes a new member; Boden clashes with the new assistant deputy commissioner. ...