Encyclopedia Brown solves ten mysteries, from recovering a client's prized tooth collection, to following a trail of paint to find a sneaky thief, and more.

Leroy Brown, aka Encyclopedia Brown, is Idaville's ten-year-old star detective. With an uncanny knack for trivia, he solves mysteries for the neighborhood kids through his own detective agency.

Ten brief cases allow the reader to match wits with ten-year-old crime-buster, Encyclopedia Brown, as he investigates such cases as whether a diary of George Washington's mother is authentic, or if a UFO picture supposedly taken by the army is real.

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.

Idaville's secret weapon against lawbreakers, ten-year-old Leroy "Encyclopedia" Brown, helps the police force solve ten new cases, the solutions to which are found in the back of the book.

Encyclopedia Brown, boy detective, solves ten more mysteries. The solutions are given at the end of the book

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.

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.