Even if you don't already know The Great Brain, twelve-year-old T. D. of Adenville, Utah, you can guess that his reform around Christmas 1896 is only a ploy to wangle a bicycle out of Mamma and Papa... for which he eventually gets the silent treatment (and younger brother J. D., once again raconteur par insolence, says that's worse than a whipping). At the insistence of Mamma and Papa, T. D. puts his brain to work on ""The Taming of Britches Dotty"" (who won't learn to read) and soon redeems the bike from the attic. Later he saves Papa from lifetime embarrassment by guiding him out of the woods and not telling a soul (for a small fee), but he really scoops Papa when he prints a competitive newspaper complete with solution to a mystifying robbery. A new addition in these episodes is Sweyn, the oldest boy who's home from the Academy in Salt Lake City for the holidays being holier-than-everyone -- but the Brain soon puts him down. Sadly, J.D. confides at the end of all this that T. D. is now of age himself and slated to go the Academy route in two weeks -- which leaves the much-rubbed-off-on little brother in the driver's seat... of Tom's bicycle, for one thing: ""Somebody had to take my brother's place in Adenville, and it might as well be me. There wasn't a doubt in my mind that I'd soon be the richest kid in town.