The solutions to ten mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the ten-year-old mastermind of Idaville's war on crime.
More mysterious cases for "America's Sherlock Holmes in sneakers" to solve for the standard twenty-five-cent fee. Solutions are included at the back of the book.
Fifteen brief cases allow the reader to match wits with ten-year-old crime-buster, Encyclopedia Brown, as he investigates cases, including a case of stolen diamonds, a skunk ape, a hit-run car, an Arctic explorer, and more.