RHCH. RANDOM HOUSE CHILDRENS. The saga and success ofThe Magic Tree Housecontinues! The tenth adventure,Ghost Town at Sundown, is filled with the excitement, action, and fun factsalwaysfound inMagic Tree Housebooks. Morgan le Fay has promised to make Jack and Annie masters of the tree house if they can solve four riddles. InGhost Town at Sundown, the Magic Tree House whisks Jack and Annie back to a ghost town in the Wild West of the 1880s. There, they meet a mustang herder named Slim as they search for the answer to the second riddle.