Noughts & Crosses is a series of young adult novels by British author Malorie Blackman, including six novels and three novellas.The series is speculative fiction describing an alternative history The series takes place in an alternative 21st-century Britain. The first book is written from two different perspectives – Callum's and Sephy's (Persephone) – and their experiences of their entwined but very different worlds. The chapters alternate, with even chapters being Callum's and odd ones Sephy's.