Following his uncle’s mysterious death, Alex Rider begins a quest for answers that leads him into a dark world of secrets and espionage. He comes to realise that his uncle wasn’t the man he thought he was—and that Alex is expected to follow in his footsteps.

The Department finally solves the mystery of Ian's death and realise that an old, lethal enemy has resurfaced. Alex faces off against his own duplicate in a desperate battle to save the people he loves.