Chaos Theory

S9 E1: For the emergency room personnel and doctors of Chicago's County General Hospital, the difference between life and death often depends on split-second decisions. The staff of heroic healers includes Chief Resident John Carter (series star Noah Wyle), Chief of Emergency Medicine Kerry Weaver (series star Laura Innes), Dr. Elizabeth Corday (series star Alex Kingston), Dr. Robert Romano (series star Paul McCrane), Attending Physician Dr. Luka Kovac (series star Goran Visnjic), nurse Abby Lockhart (series star Maura Tierney), Dr. Susan Lewis (series star Sherry Stringfield), Attending Physician Dr. Jing-Mei Chen (series star Ming-Na), fourth-year medical student Michael Gallant (series star Sharif Atkins) and intern Dr. Gregory Pratt (series star Mekhi Phifer).