Le Voyage dans le temps. [online electronic book]

EurÒeskouit, the brilliant inventor, friend of Geronimo, has designed a new time machine. He brought back a monkey by chance from one of his trips, which Geronimo, Darkover, Benjamin and Traqueline decide to take back to his time. Alas, barely arrived on the island in 1608, they were taken prisoner by the terrible Ferocia. She will set them free on condition that they help her find the treasure hidden by her grandfather. To do this, they will have to solve many puzzles! Aboard the pirate ship transformed into a time machine, the mice find themselves in Venice in the 14th century, in Alexandria in the 1st century AD, meet Richard Coeur-de-Lion as a child, and end - finally - by finding the famous treasure.