Chicago Internal Affairs detective Abby Kowalski investigates crimes in the department. In the opener, Abby, a beat c...

Richie shoots a teenage boy in the line of duty. Meanwhile, Abby works with one of her heroes in a case involving a m...

An ex-con accuses some police officers of harassment. Meanwhile, Abby is propositioned by the detective investigating...

A woman's corpse disappears from the coroner's office and turns up in a twisted Internet video. Abby and Lina search ...

Abby and Lina investigate a stripper's murder and discover she was killed at a private cop clubhouse where Don is a m...

Abby and Lina investigate an officer who is accused of stalking his police psychiatrist; Richie's new partner challen...

When a man collapses in front of her, Abby attempts to give him CPR; Donnie tries out for the SWAT team.

Abby and Lina investigate the erratic behavior of a crime scene photographer, which leads them to take over the inves...

Abby and Lina investigate a fellow Internal Affairs detective; Brody seeks advice on how best to woo Abby.

Abby and Lina are sent to investigate when a young girl is trampled during a brawl at a wedding; Don recognizes Macki...

Abby and Lina investigate a complicated case involving the suicide of a police officer; Mackie and Abby's brothers pl...

When Shelia hires ex-convicts in her bakery, Don starts to get worried about what the consequences could be for their...

When Don's ex-partner Paul is investigated for the death of his wife, Abby and Lina look into how she really died, wh...