Second Nature - Robinson, Nigel

Shari, Kristas and Cruse have escaped from the system only to crash-land on Earth. Now they are trapped, targets of the ruthless Donovan Trueheart and his vicious storm troopers. So when they find a secret refuge, it looks as if their troubles are over. But then they discover the chilling truth.

Second Nature 1996, Scholastic Point, London

ISBN-13: 9780590558372

Mass-market paperback