In fifth grade, two girls named Libby and May created the character Princess X: a dark haired young girl who wears a pink puffy dress, red Chuck Taylors, and wields a purple katana sword. Both girls became best friends and created stories together with Princess X as the main character until Libby died when the girls were fourteen. The Princess X story collection was lost when Libby’s dad moved away, but three years later May finds a Princess X sticker stuck on a building window when she goes to visit her dad in Seattle. She finds that Princess X has her own webcomic, but the author of the webcomic is unknown. She recruits amateur hacker Patrick Hobbs to help her with her search. May becomes convinced that Libby is the author of the webcomic after seeing various allusions to her childhood with Libby. May and Patrick then go on the hunt to find Libby and to solve the mystery of her disappearance once and for all.
This book contains a mystery that uses a creative and modern method that teens can relate to. The Internet webcomic involving Princess X is like a treasure map, but May and Patrick have to interpret it to find who took Libby and where she is hiding. Throughout the book, there are brief segments of the webcomic so it makes the reader feel like they are reading it along with May and that feature adds a unique element to the novel. There were some moments where the book gets serious, especially towards the end, but it does not get as dark as some other teen mystery books. The general feel of the book is very hopeful, but the reader can still feel the urgency in the novel as the antagonist gets on May and Patrick’s tail in the second half of the book. Overall, any teen that enjoys reading mystery novels should check out Princess X.