Annabelle Oh is a pseudonym of Jo Whittemore. There's not much to say! I write mysteries for kids. ​You want proof? Annabelle...is my pen name. What's my real name? THAT'S the mystery! For kids. And adults. I'm Korean American, I was born on Halloween, and I live in San Diego, California. (That should take care of any questions you have to answer at school. I'm represented by Jenn Laughran at Andrea Brown Literary Agency.