Greg Mills

Cruz struggles with guilt and decides to make a confession to Casey; Severide asks Dawson for help with his injury; Herrmann is faced with an unpleasant business deal.

A dangerous man is on the loose with a vendetta against Lt. Casey and the Firehouse 51 squad; Antonio's ex-wife appears; Casey has a gift for Dawson.

Dawson struggles to control her emotions during an ambulance ride with a pregnant teen; the firefighters rush to a building fire; Casey must make a quick decision when two victims both need life-saving assistance; Severide shares a bond with Anna.