In Season #6 (1998-99), the pulse-pounding excitement is contagious as Dr. Sloan uncovers a new rash of deadly mysteries … and struggles to save his colleagues after a terrorist bombing at the hospital. Guest Stars: Patrick Duffy, Bryan Cranston, George Takei, Walter Koenig, Shelley Long, Richard Herd, Adam West, Jack Klugman (as Quincy) and Stephen J. Cannell.