How do you take down an enemy when no one believes they exist?

When the lawyers of alleged war criminal Hannibal Strauss are caught up in a terror attack in The Hague, barrister Michael Devlin immediately suspects all is not what it seems. Teaming up once more with Agent Joe Dempsey, they must find who's behind it all before any more innocent lives are lost.

With their key witness on the run and assassins on their tail, their only lead is a codename: the Monk, a legendary and mysterious foreign agent with a fearsome reputation. But what is his stake in this dangerous game? And just who is part of his shadowy network of spies? Caught in a complicated web of lies, secrets and double agents, there's no one Dempsey and Devlin can trust but themselves.