"No one in Scotland can escape from the past. It is everywhere, haunting like a ghost." Geddes MacGregor Does the Scottish Thistle Amulet have unescapable mystic properties related to the past? When Riley ad her cousin Charlie learn of a priceless, stolen Scottish thistle antiquity on their visit to the Edinburgh Museum in Scotland, the temptation to uncover its whereabouts lures them into a conspiracy scheme with their new friends, the McGregor twins. Deliberately ignoring Riley's parents' warning not to engage in any amateur detective capers, the four sleuths choose to pursue what they think is a harmless investigation. The lines between right and wrong become blurred as the four detectives create a prickly situation of their own by withholding their sleuthing escapades from Riley's parents. The exhilarating expectation of fi nding the lost treasure unwittingly tangles them in a thorny plot by a maniacal criminal who'll stop at nothing to protect an unlawful, lucrative enterprise. Strange, haunting, threatening events are shrugged off by the teens. How could they know that every clue they fi nd will become an entanglement that, in the end, could possibly lead to their demise.