A razor-sharp and intensely moving novel, the second in the Noughts & Crosses sequence.

Knife Edge... is relentless in its pace... It is devastatingly powerful. - The Guardian Fast-paced and full of incident, Knife edge will be devoured by the many fans of the first book - TES A genuine literary achievement - Books for Keeps Malorie Blackman is writing a disturbing trilogy that should be read because it is important. And a gripping yarn as well. - The School Librarian

Malorie Blackman worked as a database manager and systems programmer before becoming a full-time writer. Her reputation has steadily grown and she has been awarded a number of prizes including the WHSmith's Mind-Boggling Books Award and the Young Telegraph/Gimme 5 award for HACKER, the Young Telegraph/Fully Booked award for THIEF! and, more recently, shortlisted for the Carnegie Medal for PIG-HEART BOY. She was voted Voice/Excel Children's Writer of the Year in 1997. Her novel NOUGHTS AND CROSSES has won both the Children's Book Award and the Lancashire Children's Book Award 2002. THE TIMES recently described her as 'a bit of a national treasure.'