Born in Portland, Maine, in 1928, Marjorie Weinman Sharmat dreamed of becoming a writer. Little did she know that she would be the author of more than 130 books for children of all ages, which have been translated into 17 languages. Another of her childhood dreams, that of becoming a detective, has also been realized in her most popular Nate the Great series, begun in 1972. Many of Sharmat's books have been Literary Guild selections and chosen as Books of the Year by the Library of Congress. Several have been made into films for television, including Nate the Great Goes Undercover, winner of the Los Angeles International Children's Film Festival Award. Nate the Great Saves the King of Sweden has been named one of the New York Public Library's 100 Titles for Reading and Sharing. Her She lives with her husband in Tuscon, Arizona.

Mitchell Sharmat, a graduate of Harvard University, has written numerous picture books, easy readers, and novels. He is best known for the classic Gregory, the Terrible Eater, a Reading Rainbow Feature Selection and a New York Times Critics&; Pick. In his honor, The Sharmat Collection, displaying the books he has written, was established at the Harvard Graduate School of Education by the Munroe C. Gutman Library.

John Lavelle is an American stage, film, and television actor who has appeared on Broadway opposite Lorraine Bracco in The Graduate. His other theater credits include As You Like It, Cymbeline, Picnic, Orphans, Rosencrantz and Guildenstern, and Grease. Lavelle has also narrated a number of audiobooks in the Nate the Great children&;s detective series.