My Grandma is so crazy about your Hannah Vogel series, and has been asking me for the last couple years if any more have been released. She's POSITIVE that A City of Broken Glass couldn't have been that last book. She's asked me to find out if there will be more, and I can't find anything online, so I'm going to the source. Is the Hannah Vogel series complete, or will there be more books? Thanks in advance!