![Endgame (Agent 21)](http://monsterbookshop.co.uk/cdn/shop/files/9781849410120_200bbb9d-8d34-4af6-8fb1-8f076629e8d7.jpg?v=1719754853&width=1445)
'Don't come after us ... remember the first thing I ever taught you - that your first duty is to stay alive'
For some time now, Zack Darke has been operating solo, in total secrecy, for a shadowy government organisation.
When his handlers are abducted by somebody with a serious personal vendetta against him, Zak has no choice but to go after them. And heading across the world to find them - into danger like he's never known - is something that, this time, he cannot do alone . . .