An explosive thriller from former MI5 officer, Tom Marcus, author of the bestselling Soldier Spy. There is a terrifying threat to UK national security. The Blindeye team must take it down.

When no one knows you exist, you don't have to play by the rules . . .

Meet former MI5 officer Matt Logan, now part of a totally deniable government organization known as 'Blindeye' - with full licence to do whatever it takes to neutralize threats to the UK's national security.

When intelligence comes through that the Kremlin plans to launch a terror attack in London, Logan and the team set in motion a surveillance operation on a billionaire Russian oligarch who may be connected with the incoming threat.

As they dig into the man's life, they soon discover a network of incredibly dangerous individuals whose plans could tear the nation apart. Battling personal demons of his own, Logan must defend his country from a terrifying enemy, or die trying . . .

Defend or Die is the second in Tom Marcus's breathtaking series featuring tortured MI5 operative Matt Logan, following on from Capture or Kill.