Every episode from the last five seasons of the long-running US medical drama set in Chicago's County General Hospital. It's always rush hour at the ER and each day brings new challenges, triumphs and losses. The series follows the private and professional lives of the hospital's doctors and nurses including Dr. Luka Kovac (Goran Visnjic), Dr. Archie Morris (Scott Grimes), Dr. Susan Lewis (Sherry Stringfield), Dr. John Carter (Noah Wyle), Dr. Abby Lockhart (Maura Tierney) and Nurse Sam Taggart (Linda Cardellini).