When the body of a Russian supermodel is found hanging above the River Thames, it leads specialist crime unit Unlucky 13 into a world of intrigue and murder being played out on the streets of London. How does the death of one of the world's most famous faces link to the grim discovery made at the mansion of a leading Russian dissident? And why does the same girl appear to have been murdered twice? It's up to them to uncover the real identities of all the dolls in this case before these killings spiral out of control. From the streets of London to the forests of Russia, 13 find themselves out of their depth and in deadly danger as in this version of Russian Roulette almost every chamber is loaded... Can they uncover the identity of the final doll before they run out of time and find themselves being added to the body count of a killer who takes no prisoners? This is the fourth outing for Unlucky 13 and this time the whole future of their unit is tipped into uncertainty, as they discover office politics can be just as deadly as foreign politics.