When Burgess realizes that her sister, Nicole, never made it home after a night out with friends, the members of the intelligence team make finding Nicole their top priority.
The investigation leads Intelligence to one of Chicago's wealthiest families after a nighttime photographer is murdered over a piece of mysterious footage; Burgess' sister Nicole visits the district and presents an icy attitude toward Ruzek.
When Ben lands in a 1950s psychiatric institution, he must engineer a daring escape for a young woman unjustly committed by her husband; the team is shocked to learn the identity of a mole in Quantum headquarters.