Gabriela Epstein is the creator of the New York Times bestselling graphic novel adaptations of Claudia and the New Girl and Good-bye Stacey, Good-bye by Ann M. Martin. She is also the co-creator, with Christina Diaz Gonzalez, of Invisible, and is the writer and illustrator of the Danny Phantom graphic novels. Gabriela graduated from the Rhode Island School of Design with a degree in illustration and has worked as a character designer for TV animation. When she isn't making comics, she enjoys yo-yoing, playing ice hockey, and reading. She lives in Austin, Texas. Visit her online at gre-art.com.

Ann M. Martin is the creator of The Baby-sitters Club, which has more than 190 million books in print, making it one of the most popular series in the history of publishing. Her novels include A Corner of the Universe (a Newbery Honor Book), Belle Teal, Here Today, A Dog's Life, On Christmas Eve, and the Main Street and Family Tree series, as well as the much-loved collaborations P.S. Longer Letter Later and Snail Mail No More with Paula Danziger. Ann lives in upstate New York.