Eugene Lambert 
Sign of One 

One for sorrow, two for death&On Wrath, a dump-world for human outcasts, identical twins are feared. Only one will grow up human, while the other becomes a condemned monster with ‘twisted’ blood.When sixteen-year-old Kyle is betrayed, he flees for his life with the help of Sky, a rebel pilot with trust issues. As the hunt intensifies, Kyle soon realises that he is no ordinary runaway – although he has no idea why he warrants this level of pursuit.The hideous truth they discover could change the fate of Wrath and its harsh laws forever. Their reluctant, conflicted partnership will either save them – or bring about their destruction.