With sales declines in the adult segments offsetting gains in the juvenile categories, print unit sales fell 0.7% in the week ended Dec. 14, 2019, compared to the similar week in 2018, at outlets that report to NPD BookScan. The star of the week was Dav Pilkey, whose Fetch-22 (Dog Man #8) sold more than 312,000 copies in its first week, leading to a 9.8% gain in unit sales in the juvenile fiction category over the week ended Dec. 15, 2018. Jeff Kinney’s newest Wimpy Kid book, Wrecking Ball, also had a good week, with sales of nearly 95,000 copies. Print unit sales in juvenile nonfiction rose 10.7% over 2018, driven, once again, by Raina Telgemeier’s Guts, which sold more than 43,000 copies. The Unofficial Harry Potter Cookbook by Dinah Bucholz also had a solid week, with almost 29,000 copies sold. The 7.1% decline in unit sales of print books in the adult nonfiction category had a familiar cause: Michelle Obama’s Becoming sold about 508,000 copies last year at this time. In the most recent week in 2019, the top 10 adult nonfiction titles together sold fewer than 250,000 copies. Ree Drummond’s The Pioneer Woman Cooks: The New Frontier was #1 on the category list, with just under 45,000 copies sold. Unit sales fell 2.3% compared to 2018 in adult fiction. The #1 title in the category was The Boy, the Mole, the Fox and the Horse by Charlie Mackesy, which sold more than 58,000 copies. Where the Crawdads Sing by Delia Owens continued to enjoy a holiday bounce, with more than 50,000 copies sold in the most recent week and 1.7 million in the year to date.