Ell's twin daughters, to support their adoptive family, start off by doing juggling and then acrobatics on the streets of Mexico. They, being quite smart four-year-olds find that drawings and paintings pay better; so they move to art as their money-maker. Mom, meanwhile, continues her search with a little help from Zage. Numerous bad guys are dispatched by both the searcher and searchees as they transport around several countries without connecting. A fitting reentry for the girls into this very entertaining series. ( )