Mandie and her friends are off searching for an illusive treasure hidden sometime in the distant past. Names from all-but-forgotten local history and threats from an angry man make this a challenge you won't want to miss!

In her last adventure, Mandie and her best friend have discovered a mysterious old trunk in the attic of their boarding school. A set of old letters includes some important and exciting information. Though warned that uncovering the past can be dangerous, Mandie and her friends refuse to give up. Copyright © Libri GmbH. All rights reserved.

Mandie, Snowball, and Celia become trapped in a dark and creepy secret room in the schoolhouse basement. Can Mandie discover the meaning to the mysterious writing on the wall and find a way out?

Mandie and her friends search for a hidden mystery in the tunnel behind a crack in the wall.

Mandie goes home for the Christmas holiday and finds a very special present waiting for her.

The first night Mandie is at the White House she hears something in the hallway and is convinced that she sees George Washington-- who's been dead for 200 years! In the nights that follow, she sees him again in different places. What's going on?

Mandie and her friend Joe find a mystery at her Uncle John's old mine at Rose Creek, as Mandie continues to develop her Christian faith.

In 1900, Mandie is searching her dead uncle's mansion for a missing will when she finds a secret tunnel and strangers who claim to be her relatives.

Another adventure with Mandie ensues when a friend's ocean front beach place houses what seems to be a "phantom" rising into the air and then falling into the water. Mandie learns some important lessons about friendship and jealousy.

Mandie is given permission to travel to Europe, but during the voyage she and Celia are puzzled by mysterious happenings aboard the ship.