Sarah Lundy has a secret online life, and it might all come crashing down. Back at the beginning of the new millennium, when the Internet was still unknown territory, Sarah Lundy started an anonymous blog documenting her return to the dating scene after a devastating divorce. The blog was funny, brutally honest and sometimes outrageous. Readers loved it. Through her blog persona, “Mitzi Bytes,” Sarah not only found her feet again, but she found her voice. Fifteen years later, Sarah is happily remarried with children and she’s still blogging, but nobody IRL—not even her husband or best friends—knows about Mitzi. They don't know that Sarah’s been documenting all her own exploits, as well as mining the experiences of those around her and sharing these stories with the world. Which means that Sarah is in serious trouble when threatening emails arrive from the mysterious Jane Q. Time’s up, the first one says. You’re officially found out. As she tries to find out Jane Q’s identity before her secret online self is revealed to everyone, Sarah starts to discover that her loved ones have secrets of their own, and that stronger forces than she imagined are conspiring to turn her world upside down. A grown-up Harriet the Spy for the digital age, Mitzi Bytes examines the bonds of family and friendship, and the truths we dare tell about ourselves—and others.