John Dennis Fitzgerald

In 1896 the Great Brain of Adenville, Utah, is almost twelve years old and more mischievous than ever in his practical jokes and schemes against everyone in town.

The exploits of the Great Brain of Adenville, Utah, are described by his younger brother, frequently the victim of the Great Brain's schemes for gaining prestige or money.

Ten-year-old Susan relates the adventures and frustrations of her family's wagon train west, culminating when her twelve-year-old brother is asked to turn himself over to the Indians in order to save the lives of the rest of the party.