Another children’s book from PNS publishing. Ellie Caitlin and the Vortex Dwellers by Martin McGregor is a science fiction story.
Ellie moves in with her Aunt and Uncle after loosing her father in a tragic accident. She develops the Neutrino Engine which can travel in time. After her first test mission she is determined to go back and save her father. But she is thrown 7 years into the future where Earth has been decimated by creatures from another dimension The only way to save mankind is to go back in time and she has only 24 hours to find her way home.