Months after refusing to work with MI6 again, Alex Rider is drawn back into the world of espionage when an experimental cyber-weapon - known only as Shadow Protocol - goes missing after the lead scientist mysteriously vanishes from a secret research facility in Switzerland. MI6's hands are tied. Officially, the British government has no jurisdiction. Unofficially, they need someone off the books. Someone untraceable. Someone they can deny. They need Alex Rider. But as Alex infiltrates an elit...