Marjorie Weinman Sharmat has written more than 130 books for children and young adults, as well as movie and TV novelizations. Her books have been translated into twenty-four languages. The award-winning Nate the Great series, haled in Booklist as "groundbreaking," has resulted in Nate's real-world appearances in many New York Times crossword puzzles, sporting a milk mustache in magazines and posters, residing on more than 28 million boxes of Cheerios, and touring the country in musical theater. Marjorie Weinman Sharmat and her husband, Mitchell Sharmat, have also coauthored many books, including titles in both the Nate the Great and the Olivia Sharp series. Rosalind Weinman, a portrait artist, lives in Tucson, Arizona. Her recollection of a mysterious middle-of-the-night phone call that woke her father, Nathan (the original Nate the Great), and mother, Anna, inspired this book. Rosalind Weinman has shown exceptional bravery in allowing the character Rosamond to be named after her. Marc Simont won the Caldecott Medal for his artwork in A Tree Is Nice by Janice May Udry, as well as a Caldecott Honor for his own book, The Stray Dog. He illustrated the first twenty books in the Nate the Great series.