The 1938 -39 season begins with the departure of the two main stars with one new star and one returning favorite. Tonight, Sanitarium patients are mysteriously dying and being drained of their blood. Lamont Cranston and Margot Lane are summoned by the head doctor. But when they arrive they find him murdered. Bill Johnstone stars as The Shadow and Agnes Moorehead returns as Margo Lane. Commentary on Bill Johnstone's history with the Shadow and winning the title role after Orson Welles'departure.