Robyn Opie Tweet Black Baron is only one of the many books Robyn Opie Parnell has written. She is the author of 88 children’s books. Her latest books include Maya and the Crystal Skull and Stop! Do Not Read This Book. For more information about Robyn and her books please visit her website – http://www.robynopie.com – and her blog – http://www.robynopie.blogspot.com.