The Last Assassin // Extremis — Barry Eisler

When freelance assassin John Rain learns that his former lover Midori has been raising their son in New York. he senses a chance for reconciliation, perhaps even redemption. But Midori is being watched by Rain's enemies, and his sudden appearance would put mother and child in mortal danger. To save them, Rain must draw on the killing skills he hoped to leave behind -- and engage the help not only of his reliable partner, former Marine sniper Dox, but also of Delilah. the stunning Israeli intelligence agent whose plans for Midori might be entirely different from Rain's....