Galax-Arena Series by Gillian Rubinstein

Peter, Joella, and Lianne are forced onto a spaceship and taken to the planet Vexa where they are made to perform death-defying stunts for their alien captors. Joella has never been a good gymnast and now she faces the unspeakable alternative - becoming a Vexan's pet....

Sequel to Galax-Arena: the story of how Joella, Peter and Liane deal with life on the run from Project Genesis Five. Conveyed from the viewpoint of both Joella and her brother Peter, the three escapees are still haunted by their past experiences at the Arena. Trying to locate their mother, Joella and Liane separate from their brother and unintentionally take shelter in a corrupt-breeding program 'Terra Farma'... moreSequel to Galax-Arena: the story of how Joella, Peter and Liane deal with life on the run from Project Genesis Five. Conveyed from the viewpoint of both Joella and her brother Peter, the three escapees are still haunted by their past experiences at the Arena. Trying to locate their mother, Joella and Liane separate from their brother and unintentionally take shelter in a corrupt-breeding program 'Terra Farma'. Whereas on the search for his sisters, Peter must use his survival instincts when he is forced to endure the harsh secret organization 'Birds of Prey'. Trying to expose Project Genesis Five and its control of both organizations, Joella, Peter and Liane must unite once more in their bid for freedom. less