The first volume of Maurice Gee's acclaimed trilogy wherein Susan and Nick are transported to the terrifying land of O... 'Nick had seen the birthmark on Susan's wrist. It had two parts. Each was shaped like a tear drop, curved like a moon. One was bright red and the other golden brown.' Susan had always been a bit odd and never really got on with her cousin Nick, but the mark on her wrist draws them together in a frightening adventure. They are summoned to the beautiful land of O in a last-ditch attempt to save the planet from cruel Otis Claw and his followers, the evil Halfmen, who have lost every trace of human goodness and kindness. Also available as an eBook