What is the secret long hidden in Murphys Creek? Following local rumours of a long-ago massacre and buried gold, young Chinese-Australian astrologer Lian Song embarks on a search for the truth of the fate of her ancestor, an imperial Gold Amban and his lost treasure. Her search becomes a race against time as other forces seek the legendary gold. A mysterious Chinese man follows her every move and a religious cult threatens to destroy the evidence she seeks. Then the gods of nature intervene. The Neptune Vortex is a multifaceted occult mystery set in Australia, Hong Kong and Yangshuo in China, in which fate and freewill are explored and where the characters are caught in a time vortex, during the devastating Queensland floods of 2011, whirling them back to the 1860s Gold Rush and the Chinese Taiping Rebellion. As a master of the enneagram Lian uses this ancient paradigm to help artist- photographer Ray, his soul mate Katie and Professor Wolf, her friends in Murphys Creek, to find answers to their questions about ecology, reincarnation, fate and freewill. But can she find the truth she needs in time?On a deeper level, the plot of The Neptune Vortex was designed with the enneagram. Author, Van Derek, an artist and astrologer for almost forty years, presents an abstract mathematical theory, in narrative form, about the source of inspiration at the heart of our calculated universe.