A terrorist is targeting Britain—and the threat comes from an “invisible,” someone traveling under a British passport, making them nearly impossible to track.
MI5 agent Liz Carlyle is no stranger to high-stakes missions, but this case is unlike any she’s faced before. As she races to identify the invisible before an attack, Liz must rely on every bit of her experience, intelligence, and instincts to stop a disaster in the making.
With danger closing in and time running out, the stakes have never been higher. One wrong move, and countless lives could be lost.
Can Liz outmaneuver an enemy hiding in plain sight, or will this mission prove too elusive even for her?
