Presented with an unexpected assignment, Alex Rider's greatest nemesis, Yassen Gregoravich, recalls his life and the path that led him to become an assassin while his one-time friend, Alex's uncle, became a spy.

Presented with an unexpected assignment, Alex Rider's greatest nemesis, Yassen Gregorovich, recalls his life and the path that led him to become an assassin while his one-time friend, Alex's father, became a spy.