When Ivy Diamond comes to live in the ramshackle old house on Gumm Street in the town of Sherbet, the lives of her neighbors, talented Cat, cautious Pru (think Officer Buckle) and adventurous Franny, become much more interesting. Primavera’s comic fantasy adventure pays homage to both Baum’s Oz and Hollywood’s as the girls pursue the theft of a silver slipper by a wicked, though stylish, witch. Lively black-and-white illustrations woven into clear, wide-leaded text give energy and charm to nearly every page. Great fun in parts, ambitious and good-natured, with satire, invention and silliness à la Baum: Besides the girls, green teen witches and an amusingly benevolent mama potato in the land of Spudz stand out among a crowded cast of figures and places. Transitions and expository narrative occasionally weigh down the story, while the plot careens a bit wildly and untidily to its conclusion. A mixed bag, but entertaining. (Fiction. 8-11)