The Sentinel by Jack Flynn

Marcus Dane is danger incarnate—a billionaire ex-soldier with a body built for sin and a gaze that promises ruin. In the sultry depths of Charleston, he’s the silent sentinel of Dominion Hall, guarding secrets that could burn his empire to ash. Enter Claire Dixon, a relentless podcast journalist chasing the truth behind the Folly Beach Pier explosion—a blaze that wasn’t an accident. She’s all sharp edges and fearless fire, and she’s about to ignite everything Marcus controls.

He warns her to back off, pinning her against walls with gravel-rough threats and a touch that sears. She dares him to try harder, digging deeper into a war she doesn’t understand—one that’s already claimed lives. But when their clashes turn to molten nights, enemies become lovers, and Marcus’s possessive need to protect her battles Claire’s hunger for answers, the lines blur. Department 77 is closing in, and every kiss, every secret, could be their last.