n the prequel to the number one bestselling Alex Rider series by Anthony Horowitz, contract killer Yassen Gregorovich is given orders to kill Alex. But Yassen knows a secret from the past that connects him to the fourteen-year-old spy. What is it that makes one of them choose to do evil and what does it take to turn him into a killer?

Anthony Horowitz (born 5 April 1955), is an English author and screenwriter. He has written many children's novels, including The Power of Five, Alex Rider and The Diamond Brothers series and has written over fifty books. He has also written extensively for television, adapting many of Agatha Christie's Hercule Poirot novels for ITV series. He is the creator and writer of the ITV series Foyle's War and the series Midsomer Murders.