Former close protection officer Michael Bale has a dangerous skillset. One that many men – good and bad – want to make use of.

That's why a powerful Russian oligarch wants to hire Michael to protect him. And with Michael's wife gone and his track record with the Met in tatters, Michael doesn't feel he has a choice.

But when a terrorist attack on the M11 kills a police firearms team, MI5 suspect that Michael's new client and the Russian GRU are involved. The bomb was a Sunburn missile warhead, military-grade and able to vaporise everything in its blast radius. And there are more warheads out there.

Blackmailed by MI5 into spying on the client he's been hired to protect, Michael is pushed to his limits by this new double-agent status. If he doesn't locate the other warheads, thousands of civilians will die – and time is running out...