The KGB wall of power has cracked. A double agent is leaking crucial Soviet secrets to London from the core of the fortress of Dzerzhinsky Square. He must be stopped before the leak erupts as a full, raging meltdown. The man they call Kyril holds the key. As live bait for both sides he's running on his own, a moving target. And only when the last traitor dies will he know who's won the deadliest game ever played...