The Aldens begin their adventure by making a home in a boxcar. Their goal is to stay together, and in the process they find a grandfather.

A cross-eyed baseball pitch...
A missing penknife named Excalibur...
Poems that pack a punch...
A kid-lover tumed kidnapper...
And some tall tales that come up short!
These are just some of the ten brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computerlike brain. Try to crack the cases along with him—the answers to all the mysteries are found in the back!

Encyclopedia Brown has an uncanny knack for trivia. With his unconventional knowledge, he solves mysteries for the neighborhood kids through his own detective agency. But his dad also happens to be the chief of the Idaville police department, and every night around the dinner table, Encyclopedia helps him solve some of the most baffling crimes. With ten confounding mysteries in each book, not only does Encyclopedia have a chance to solve them, but...

Third-grader Dink and his detective friends hope to receive a big reward by finding the person whose video recorder picked up a picture of the local bank robber.

The solutions to 10 mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the 10-year-old mastermind of Idaville's war on crime.

Nate the Great solves the mystery of the missing picture.

Idaville's secret weapon against lawbreakers, ten-year-old Encyclopedia Brown, assists the police force with ten insoluble cases. Solutions are at the back of the book.

On Halloween night, seventh grader Sammy stumbles onto a mystery involving a twenty-year-old family feud and some heirlooms stolen by a man in a skeleton costume.

Ten brief cases allow the reader to match wits with ten-year-old crime-buster, Encyclopedia Brown, as he locates stolen jewels, retrieves a stuffed tiger, and more. Solutions are included at the back of the book.

The old farm where Grandfather grew up is full of stories. The Aldens must find out the truth about a devastating fire and a secret dating back to the Revolutionary War!