They were MI6's most lethal assassins. Killers who lived in the shadows. Until now...

MI6 operative Duncan Grant has been officially missing in action for the last six months. Going on deep-cover to hunt down those responsible for the death of a close ally.

Half a world away, enjoying sedate retirement under new identities, former Albion agents are being murdered.

And now there's only one left.

Given an ultimatum to save the last Albion or face expulsion from the agency he's sacrificed so much for, Grant has no choice but to pursue both missions at the same time.

Unbeknownst to him, Grant's relentless pursuit of revenge is about to reveal devastating secrets within the British establishment.

And they are determined to see Duncan Grant dead.