When an attorney is found dead near the body of a private escort, the team looks for a connection.

After a truck filled with armor-piercing rifles is hijacked, the team must discover who stole it.

A father abducts a billionaire's daughter and holds her hostage until his own child is returned.

When the team is called to the scene of a murder, it quickly suspects political motivation.

Jess LaCroix and his team come to help OA find a fugitive LaCroix arrested years ago.

The team investigates a drug deal gone bad after the body of a college student is found.

The lives, loves and losses of the doctors and nurses of Chicago's County General Hospital.