A Connecticut Yankee In King Arthur's Court

A Yankee is whisked back in time from America in the second half of the 19th century to 6th-century England, when England was ruled and guided from Camelot by monarch and magician. What happens when a modern (for Twain) man with a background of railroads, advertising, ammunition and soap arrives in the medieval glade and castle? How do the spells of Merlin and the lances of the Knights fare agains...