Rylant and Stevenson’s 18th book in the series is a tenderly humorous tale about a common event in family life. Henry, with a little help from Mudge, comes to the aid of his Cousin Annie, who is moving next door. While Henry and his family are delighted, careful Annie views the move with trepidation. She’s so nervous that she has broken out in blotches contemplating moving her frilly dresses, shiny shoes, and lace hankies. Henry offers his time-tested remedy for nervousness: a snuggle under the covers with Mudge. Rylant thoughtfully addresses Annie’s dilemma, validating a child’s concerns and providing a generous solution. Stevenson’s gaily colored pen-and-ink illustrations provide a perfect counterpart to the story, deftly highlighting Annie’s vulnerability as well as the humor in Henry and Mudge’s antics. (Picture book. 6-8)