The Chicago P.D. officers are investigating one of their own this week.

On Wednesday's episode, Lindsay (Sophia Bush) goes undercover in the hopes of drawing out a police officer who's allegedly abusing the privileges that come with his badge. The corrupt cop has reportedly been targeting women leaving a local casino so that he can pull them over and rob them.

The sting operation proves to be a success, but is the corruption limited to just one officer? And if not, how far will the higher-ranking officers go to protect themselves?

Check out an exclusive sneak peek from Wednesday's episode here:

Chicago P.D. airs Wednesdays at 10/9c on NBC.