Edison
Torben Kuhlmann
When two unlikely friends build a vessel capable of taking them to the bottom of the ocean find a missing treasure the truth turns out to be far more amazing.

by Thea Stilton (2009)
"When Paulina gets a phone call from home telling her that a friend is missing, the Thea Sisters travel to Peru to help solve the mystery. There, the five mice climb the Andes Mountains in search of a missing archaeologist. Along the way, they stumble upon clues leading them to a mysterious hidden city. Will the Thea Sisters find Paulina's friend, and the treasure of the Secret City?" -- P. [4] of cover.
Torben Kuhlmann
When two unlikely friends build a vessel capable of taking them to the bottom of the ocean find a missing treasure the truth turns out to be far more amazing.
Stephen Mooser
Horace and Mildred Flopbottom hire the young professionals of the Treasure Hounds organization to find out where Aunt Henrietta stashed her fortune before she died. Also includes two descriptions of actual treasures which have never been found.
Tom McCaughren
Four young boys find adventure involving ghosts and buried treasure when they set out to discover the secret behind the old legend of the golden key.
Joan Lexau
When his neighbor finds dog food in strange places all over his house, Willy Nilly asks Miss Happ, a witch, to help solve the mystery.