Brian Plocharczyk

Severide realises he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay.

Carver deals with the fallout of his arrest; Brett searches for closure with the baby she rescued; Capp weasels his way into the Firehouse 51 group chat.

Mouch gets a little too competitive in the firefighter muster challenge; Chief Boden dials up the pressure on Casey and Severide to look into the cause of the fire that trapped his wife.

Voight and the team work together to uncover the truth of the Bell case before more lives are lost.