If we tell you

"When their parents kill two uninvited guests at a neighborhood barbecue and then disappear, identical twins Cameron and Lewis Larsen know nothing except: they must get to Edinburgh; they need to find someone named Margaret Ross; someone is following them. They run, fleeing for Scotland to a small hotel. Too conspicuous as identical twins, they hide by pretending to be one person, venturing out to gather clues on alternate days. With no idea who'...