Interceptor

"Sophia was the Fifth Column’s most dangerous weapon. Now she’s their greatest threat. Sophia is taking out Fifth Column operatives before they can complete their deadly missions.
But will a new type of operative tip the balance against her?
Ambushed in Eastern Europe, she barely escapes with her life. But the new operative isn’t her only threat. A deadly Russian hunter also has Sophia in her sights. They’ve crossed paths once before. And this time, only one of them will walk away."