Season 3 Episode 13
Lindsay goes undercover to catch a rogue cop who targets women at casinos; Platt risks her life in a negotiation crisis.
When Intelligence learns about a rogue cop who's targeting female winners at casinos, Lindsay (Sophia Bush) goes undercover to catch the criminal in the act. After a successful operation grabs the suspect, they learn that the scam goes much deeper than anyone suspected and includes police involvement, fake badges and actual patrol cars. After everything gets traced back to a detective, an armed standoff sees Platt (Amy Morton) able to defuse the situation, and the detective is taken into custody without incident.
Still stinging from her breakup with Ruzek (Patrick John Flueger), Burgess (Marina Squerciati) requests a transfer to a different district. Platt is hesitant to sign off on the transfer, and implores Burgess to reconsider.
Roman (Brian Geraghty) is injured after a foot pursuit with a suspect. Though his injuries will heal, this means that Antonio (Jon Seda) will take his place in the Battle of the Badges, the upcoming charity boxing event between Chicago P.D. and Firehouse 51.