Tommy Greenwald is the author of Game Changer , Rivals , and Dinged . Game Changer is on 19 state lists, was an Amazon Best Book of the Month, a YALSA Top Ten pick, and a Junior Library Guild Premier selection. Rivals was also an Amazon Best Book of the Month, a Junior Library Guild selection, and a YALSA Quick Pick for Reluctant Young Adult Readers. Greenwald is the author of the Crimebiters! and Charlie Joe Jackson series, among many other books for children. Day job-wise, he is the cofounder of Spotco Advertising, a theatrical and entertainment advertising agency in New York City, and the lyricist and co-bookwriter (with Andrew Lippa) of John & Jen , an off-Broadway musical that has been produced around the country and internationally. To read woefully outdated information about him, visit tommygreenwald.com. Lesley Vamos earned a bachelor of digital media with high distinction from the University of New South Wales Art and Design, along with an honorary award in hand-drawn animation despite continuing to hold her pencil incorrectly.

Vamos has been running her illustration and design business for more than a decade and is passionate about telling stories that put good into the world. She lives in Sydney, Australia with her partner, two children, and a small floofer named Penny.