Jim Cantafio

Tom tries hard to bond with his new boss, Karl makes Susan an offer she cannot refuse, Bree does some sneaky sleuthing at Betty’s house, and Gabrielle sets her house in order.

When a prominent alderman who is known for his urban revitalization efforts is killed, Intelligence looks into the corruption haunting his neighborhood; Olinsky feels pressure after receiving an ultimatum from Woods.

Halstead and Atwater go under cover to prevent military-grade weapons from hitting the street; Voight calls in a favor to clear Olinsky's name for Bingham's murder.

Ruzek and Atwater go under cover as prison inmates in order to find the man they believe killed a 10-year-old girl; Burgess and Roman give a tour of the district to some boys they believe are part of the Police Explorers program.

Allison becomes preoccupied with preparing for the end of civilization after an earthquake follows an apocalyptic dream; an upperclassman seeks out Ariel for help with geometry, then asks her out.