Built to Last by Julie Ann Walker

Masterful, mysterious, and completely ruthless, Jamin “Angel” Agassi joined the Black Knights Inc. after a mission-gone-wrong forced him to undergo extensive plastic surgery and change his name. He’s going to bring down the world’s worst crime syndicate, and hopefully keep Sonya Butler, a love from his past, from discovering who he really is…

When a dark-eyed stranger gets caught up in Sonya’s latest mission, she starts to question all her hard-won instincts. Something about Angel tells her he’s more than he seems, and sometimes, when she least expects it, he reminds her of a man she used to know. As the bullets fly, she realizes that in love and war nothing is ever what it seems…