Guy Van Swearingen

Casey falls under the thumb of a rogue cop after a horrific car crash, while new girl on the block Nicki pays Severide special attention.

Detective Voight shows up, looking to cash in the favour Dawson owes him, Casey's social life takes on a familiar pattern, Molly prepares for the grand opening of the Dawson bar and Severide faces a threat to his career.

Chicago is bankrupt and a team of receivers pour in to take control of the city. However, losing his mayoral power isn't the biggest danger to Kane, as various enemies are threatening to expose his illness and corruption.

Kane eliminates longtime members of his political machine; Meredith and Emma reject Kane's efforts to reconnect.