Season 2, Episode 15 -"What Do You Do"
Burgess and Roman get trapped with no means to defend themselves or communicate for help when investigating a perilous smuggling operation. Meanwhile, a slow day finds the Intelligence crew receiving taser certification.
Season 2, Episode 19 -"The Three Gs"
The deaths of several teen girls in a Chinatown factory leads to a search for a human trafficker who eluded Olinsky once before. In other events, Sean has an altercation with a fellow officer; and Platt helps Nadia prepare for a polygraph test.
Season 2, Episode 23 –”Born Into Bad News”
Retired Commander Perry enlists Voight and the team to help extract his cop nephew from a unit of corrupt officers who are robbing drug dealers. When things go bad Voight must take down a younger, more violent version of himself. Meanwhile, Lindsay struggles to stay clean. At the same time a woman from Olinsky’s past reaches out to him.
Season 3, Episode 5 -"Climbing Into Bed"
After a botched undercover job, Ruzek is under scrutiny by the new Street Deputy Crowley who will determine his future with the unit. A suspicious person call turns into a murder investigation when Burgess and her temporary partner Price discover the body of a dead man in an SUV. After Mouse identifies the victim as the owner of a security company, the unit soon realizes there might be more to his story. Halstead and Lindsay take a step forward in their relationship.
Season 3, Episode 6 -"You Never Know Who's Who"
After a botched undercover job, Ruzek is under scrutiny by the new Street Deputy Crowley who will determine his future with the unit. A suspicious person call turns into a murder investigation when Burgess and her temporary partner Price discover the body of a dead man in an SUV. After Mouse identifies the victim as the owner of a security company, the unit soon realizes there might be more to his story. Halstead and Lindsay take a step forward in their relationship.