- Season 4 Episode 21
INTELLIGENCE INVESTIGATES A STRING OF ARMED BANK ROBBERIES LEADING THEM TO A SURPRISING CREW OF SUSPECTS
When the team is called to an in-progress bank robbery, they come across Detective Hailey Upton (guest star Tracy Spiridakos) trying to take over the crime scene with her Robbery-Homicide unit - butting heads with Voight (Jason Beghe) in the process. As the robberies continue to be executed around the city, Lindsay (Sophia Bush) is forced to make a decision in the heat of the moment, revealing a surprising suspect behind the mask. While working on the case at the district, Upton is shocked to come across Platt (Amy Morton), who has a special connection to her past.
Promo Video #1
See more at Chicago PD Season 4 Episode 21 "Fagin" Promo