Alpha's parents' childish quarrel (``You forgot to wash my nightshirt!'' ``Wash it yourself, lazybones''... ``I've got a good mind to go off and join the navy'') is overheard by a devil's imp who takes the opportunity of turning Papa into a lump of coal and taking his place while his wife, bringing along their baby, replaces cross Mama. Alpha isn't fooled for a minute, but she bides her time, following the imps' orders to ``unmake the beds and bring the garbage in.'' Then, as soon as they go to bed (without brushing their teeth, of course), she gets to work, cleaning up for all she's worth. When the imps find her washing their baby, they're horrified. They bring back Mama and Papa and hop off, leaving the little family peaceable at last. Transforming the parents' frightening behavior into a fantasy in which the child seizes the initiative, cleverly ousting the intruders, Cole tells a lively, preposterous tale full of role reversals that are sure to delight young readers. His language is spare, energetic, and laced with humor; his pencil and watercolor art swirls with the imps' disorder (they're not evil, just rowdy), their flailing figures and raucous faces countered by Alpha's resolute serenity. A thoroughly entertaining story with a serious (but unobtrusive) theme. (Picture book. 4-8)