Crime In A Colorado Cave (X-Country Adventures)

Plot

Ashley and Adam Arlington have a knack for uncovering mysteries. In this new series they travel from state to state, encountering mystery and intrigue wherever they go. Readers ages 9-12 will learn about the geography and history of the United States as they join the Arlingtons in their many adventures. In Crime in a Colorado Cave, Ashley and Adam, who are visiting Colorado's Cave of the Winds, join in the chase for thieves who have stolen a display of costly crystals. Will the pair be able to put the pieces together and recover the stolen crystals before the thieves escape?