Duane Swierczynski 
Point and Shoot [EPUB ebook] 

On a day like any other, Kendra Hardie picks up the phone. A voice says, 'leave the house and you’re dead’. Then the line is cut.Kendra hasn’t seen her husband Charlie for nearly a decade. He hasn’t forgotten about her – but neither have his enemies. And he has a lot of enemies. Charlie thought he could protect her by staying away. But now he has access to secrets his enemies will kill to keep hidden, and they’re planning to start with his family. After years in exile, Charlie’s arming up… and heading home.