Mackinaw City Mummies : # 10.
- Topinabee, MI : AudioCraft Publishing, Inc, 2001.
- Michigan Chillers .
They're excited at first. But then, strange things begin to happen all around them... When Robyn suddenly vanishes, Josh discovers that she has been taken to a hidden world... a world of mystical secrets and horrifying creatures. And what's more, the terrible ruler of this unearthly kingdom is going to turn Robyn into a mummy! Can Josh stop the evil ruler in time? Or will he and Robyn become forever trapped in this strange worldl... as mummies?