As New York edges closer to disaster, Elektra sees what’s beyond the wall, and the Defenders make a last-ditch effort to save the city.

Diane raises eyebrows while settling in as a new partner at Reddick, Boseman & Kolstad. Maia continues to deal with the repercussions of her family’s Ponzi scheme. Lucca and Maia…

Diane raises eyebrows while settling in as a new partner at Reddick, Boseman & Kolstad. Maia continues to deal with the repercussions of her family’s Ponzi scheme. Lucca and Maia…

Severide and Boden search to uncover whether arson was the cause of a fire at a hair salon. Mouch, Herrmann, Otis and Kidd make a startling discovery in tracking down…

A serial arsonist cold case is reopened when Lt. Severide finds a connection to a recent salon fire. Firehouse 51 celebrates a retirement party.