British Intelligence agent Zachary Russell lives by three basic rules: I'm in charge, where you go I go and nothing personal. Deviations from routine got his diplomat father killed. The one blemish on Zach's professional record was the result of his weakness for the young woman he was assigned to protect which led to her kidnapping. Keeping her secrets afterwards nearly cost him his job. So why, after ten years, does her father request him as her bodyguard?

Risk-taking heiress Antonia Castillo lives life on the edge. Determined never to be vulnerable again after her father's refusal to pay her ransom led to a vicious assault she's hidden from the media and her family, Toni never runs from a challenge, except the one presented by Zach Russell. He alone knows her deepest fears. Now, ten years later, as she finalizes negotiations to move her family's athletic wear company to her father's native Mexico, someone is using the past to terrorize her. And Zach is the only one she trusts to keep her safe.