The Mystery of the Ancient Cemetery

Continuation of the detective series with riddles and puzzles, sold in France with a total circulation of over 30,000 copies.

Olivier loves school trips. But this time, plans go awry: because of a snowstorm, the roads are blocked with snow, and instead of excursions to medieval castles, the whole group gets stuck in a small unremarkable village...
However, is this village really so ordinary? They say that more than a hundred years ago, the local priest found treasure here, thanks to which he became fabulously wealthy! And part of his treasures may still be hidden somewhere nearby...
Olivier and his friends immediately begin their search. But to find the coveted riches, they will have to deal with many cunning puzzles!