Having recovered from their Thanksgiving debacle (Fried Feathers for Thanksgiving), low-minded witches Dolores and Lavinia sally forth once again against their nemesis, young Emma. As Valentine's Day approaches (""Oh, barf me out,"" groans Lavinia), the dastardly duo discover Emma cutting out paper hearts and decide to spoil her holiday. One box of chocolate worms and a hypoallergenic nosegay later, Emma and her friends Roland (owl) and Botsford (cat) are irritated enough to strike back; using rotten eggs, a fake giant rat's tail, a bucket of green drool, and a few other props, they concoct a fiendish and suitable revenge. There's nothing subtle about the ending, either; having sent out lots of valentines, Emma (if not the reader) is surprised when her woodland neighbors send a blizzard of them in return. The story's message is clear: Do as ye are done by. As usual in this series, the colorful, slapdash illustrations appear in panels, the hand-lettered but easily legible dialogue in balloons. Stevenson's fans will welcome this newest encounter.