Adler (Child of the Warsaw Ghetto, not reviewed, 1995, etc.) continues a series of picture books set during WW II with this true account of a young Jewish child's concealment by a family of Dutch farmers. In Ritz's potently somber watercolors, the fears of Lore Baer, only four, come through clearly, first as she sees soldiers arrest her grandfather, then when she is left with a half-Christian couple by her worried parents, and finally during her days as the ""niece"" of the Schoutens, fleeing to the next town or hiding in the barn with other fugitives whenever searchers come. So ingrained does her fear of discovery become that when her parents track her down two years later at war's end, she shyly ducks out of sight and only slowly comes to trust them again. In precise but not brutal terms, Adler briefly describes events leading up to the occupation of the Netherlands and the experiences of those who went into hiding, then brings their stories up to the present in an afterword. So real and clearly explained is Lore's anxiety that to younger readers the events that compelled it will not seem remote at all.