Guardian's Mission

Danger draws one woman into an undercover agent’s arms in the first Sinclair Brothers romance thriller from the New York Times–bestselling author.

“Ma’am, I’m not one of the bad guys.”

So says the handsome man Martha Gabler encounters near her isolated mountain cabin. Tristan Sinclair claims he’s an ATF agent working undercover. And that if she doesn’t play along as his unexpected girlfriend, they’l...