Brother-and-sister team MATTHEW HOLM and JENNIFER L. HOLM are big fans of birthdays (and especially birthday cake). Today, Jennifer is the New York Times bestselling author of several highly acclaimed novels, including three Newbery Honor-winners, Our Only May Amelia, Penny from Heaven, and Turtle in Paradise. Matthew Holm is a graphic designer and freelance writer. They are also the creators of the Squish series.