The man she'd trust with her heart could sabotage everything . . .

When terrorists attack a missionary school, brutally killing their hostages and posting videos of the senseless murders online, time is running out. Sentinels' agent Alexa Marlowe is forced into an unlikely alliance with a relentless mercenary. But he is no stranger.

Jackson Kinkaid witnessed the raid, and only he can track the killers to their mountain stronghold. Guarding a dark secret, rumored to sell his services to the highest bidder, Jackson is not the same man Alexa once knew. And although he can lead her to the terrorist leader she's been ordered to take alive, how can she be sure he won't sabotage her mission to save the one person who got him through the worst nightmare of his life?