Notes

Based on an original idea by Elisabetta Dami.
Summary: When, in the process of testing his newest time machine, Professor von Volt accidently brings a triceratops, Helen of Troy, Attila the Hun, Charlemagne, and Christopher Columbus to present day New Mouse City, it is up to Geronimo and his friends to return them all to their own times and places - without being eaten by a T-Rex or skewered by Trojan warriors.
Translated from the Italian.
Geronimo Stilton.
Journey through time ; 6.