Seventh grader Kat is devastated at missing an important pre-teen social engagement and being forced instead to accompany her family on a vacation to the Yucatan. Despite her reluctance, she befriends a young Mayan tour guide who tells her the legend of an ancient Maya girl whose life bears many surprising similarities to Kat's. Includes a map, a glossary and links to Mayan history websites. Recommended for ages 12-14.  (MEX260, $16.00)