George W. Trendle's masked crime fighter The Green Hornet originated in a radio serial during the 1930s and swept up legions of fans in that venue, prior to his movie debut in 1940. Significantly, the first cinematic appearances of The Hornet didn't occur in a feature but in a couple of back-to-back movie serializations that seemed intended to transport the magic of the episodic radio format to the big screen. Both of those serials appear in this release: the 13-episode, four-hour GREEN HORNET (1940), and the 15-episode, 5-hour GREEN HORNET STRIKES AGAIN. The saga begins with the Hornet's alter ego, newspaper editor Britt Reid (Gordon Jones), donning his superhero guise to fight crime, and taking suave advantage of the authorities' perception of him as a lawbreaker, by working "outside of the law." He is joined, in his efforts, by the genius inventor and sidekick Kato (Keye Luke). GREEN HORNET STRIKES AGAIN finds Reid (now played by Warren Hull) on vacation in Hawaii, where he learns that a crime syndicate now overrules virtually every sector of the city - and then prepares do something about thwarting the central crime lord, a fellow called Grogan.