Wicked Game — Adam Chase

* Joshua Thane, aka Hex, is a freelance assassin. His next target is Dr Mary Wilding, a British microbiologist suspected of trading secrets. Breaking into her house, he discovers someone has beaten him to it - she's already dead. The portable hard drive he's ordered to steal is also missing. Then Hex comes face-to-face with Wilding's son, who he should kill to protect his own identity and professional reputation, but turbulent memories from his past trigger a crisis of conscience. Bewildered by his actions, Hex allows the boy to live and flees, yet his nightmare has barely begun.