A caged cockatoo thrust through the open car window (""Save Alice!""), a big black Zil patrolling the road to Pamplona, a good look at its odious-looking occupants--and English twins James and Fiona know that they're carrying hot cargo and may get burned. More immediately a nuisance is Davy Dawson Bjornson III, obnoxiously American (""foreign dung,"" foreign ""stupes""), who's been wished on them for the trip to Ibiza by their parents; but cousin Alaric, who's driving (and guiding the tour), neatly deflates him a case of one stereo-type (the debonair Britisher) cancelling out the other. Alaric does know one flan from another, and the twins are old Spanish hands, and the journey, speeded up to keep Alice from The Bads, exhibits a worldly appreciation of local customs and cuisine along with the tenser moments when they're almost tripped up. It's the best of Miss Wuorio's cosmopolitan mysteries for older girls, the insouciance keeping the ambience at bay.