Cathy's Book: If Found Call 650-266-8233

Cathy's Book: If Found Call (650) 266-8233 is a young adult novel with alternative reality game elements by Sean Stewart and Jordan Weisman, illustrated by Cathy Brigg. It was first published October 3, 2006 by Running Press. It includes an evidence packet filled with letters, phone numbers, pictures, and birth certificates, as well as doodles and notes written by Cathy in the page margins.