I'm pleased to announce that the Agartha's Castaway series got a makeover! The name was taken off each book, but I kept the series name, Trapped in the Hollow Earth Novelette Series. Each book was given a name and lots of the covers were changed. This is a FREE e-book series. It will be available in paperback soon. Although, the omnibus versions are already available on paperback. See new covers below. This series is available in audio at Amazon, iTunes, and Audible.com.