The Detective Club: Buried Treasure - (White Early Reader)

Fiz, Amir and Leo make up the Detective Club. When they find an old chest, they discover that the coins inside are Saxon and possibly very valuable. However Professor Mixom, the local Saxon expert, announces they-re fake. The Detective Club are upset that their find is unexciting, but when their buried treasure disappears it is up to the Detective Club to find out who and why!