The Defender by Cristin Harber

What’s worse than a rogue agent?
A rogue firm.

Spiker and Vanka. Their names are said together so often, others are unaware that the partners have worked apart. He’s the cocky American. She’s the tart Brit. They are the secret ingredient behind the success of an unknown special forces firm.

Together, they find their targets, stay alive, and drive each other crazy—until a job forces the ultimate question: when have you had enough?