Gyro Gearloose attempts to repeat Old Ben Franklin's experiment with lightning and a kite and take it even further by trapping the captured lightning in a lead strongbox, to be used later as an energy source. Naturally, not all goes as planned, though the whole venture could still prove profitable in some other way…
Behind the scenes
This story was first published in 1956 in Uncle Scrooge #13. It was reprinted in Uncle Scrooge #196, Uncle Scrooge Digest #5, Uncle Scrooge Adventures #24, and, of course, in several versions of the Carl Barks Library, as well as in the Australian Mickey Mouse #19 and Walt Disney's Comics #266.
The story is best-known for Carl Barks's only-ever use of Morty and Ferdie. In Barks's original concept for the story, Huey, Dewey and Louie Duck played the part that eventually went to the mice, but postage regulations meant that the publisher could avoid heavy taxes if the two different comic stories in Uncle Scrooge #13 didn't feature any of the same characters, leading to their asking Barks to find some way of removing Huey, Dewey and Louie from Trapped Lightning (as they were still unavoidably featured in Land Beneath the Ground!, the main story of the book).