Fifth-grader "Encyclopedia" Leroy Brown solves ten mysteries and, by putting the solutions at the back of the book, challenges the reader to do the same.

Overview: An unexpected midnight quest - A holdup at the First City Bank. - A stolen tennis racket. - Gerbils who paint in pairs. - and fifty mosquitoes netted at the Oddball Olympics! These are just some of the ten brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computer like brain. Try to crack the cases along with him-the answers to all the mysteries are found in the back!

America's Sherlock Holmes in sneakers continues his war on crime in ten more cases, the solutions to which are found in the back of the book.

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 town's ten-year-old walking encyclopedia again solves ten neighborhood mysteries. The final solutions to the cases are at the back of the book, giving the reader a chance to compare his skill to that of Encyclopedia Brown.

Encyclopedia Brown, boy detective extraordinaire, solves ten new cases, including "The Case of the Miracle Pill," "The Case of Nemo's Tuba," "The Case of the Lawn Mower Races," and "The Case of the Air Guitar." Solutions provided at the end of each chapter.