Lia D. Mortensen

Casey gives Cruz an ultimatum that could put the latter in prison, while Shay and Clarisse take drastic action to win custody of Clarisse's baby.

Will confronts a moral decision when his former teacher faces a life-threatening disease, Rhodes disagrees with the father of a young patient about a risky procedure and an unusual case causes Sarah to recall Jason Wheeler's suicide.

It's the moment of truth for the city of Chicago and the police department. FBI Special Agent Cuyler returns to pay Superintendent Colvin a visit, and Jarek stops at nothing to address family issues that have haunted him for years. When Jarek and Teresa are forced to put everything on the line, the stakes are raised as their case against the kingpin of corruption in Chicago comes to a climactic conclusion.

Following a murder that appears to be a hate crime, Teresa risks tipping Gibbons off to her big-picture plan by boldly taking on the Chicago Police Department's corrupt `meritorious' promotion system. Meanwhile, Jarek is forced to face his own reality when Vonda receives an anonymous package that reveals more about the Wysocki family.