In a Killer's Sights

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
WITNESS IN JEOPARDY  

When Gwen Harwell witnesses someone dumping a body into a Tennessee river, she knows she's the killer's new target. Far from home on a work assignment, she isn't sure where to turn—especially when her ex-husband appears. Five years ago, Dean Harwell's burdens from his police work tore their marriage apart. But now he says he's changed. He's working as a rancher; he's put his problems behind him. And he's committed to keeping her safe until the killer is caught. With their troubled past, trusting him with her life is hard enough. Can she trust him with the truth about the child he doesn't know they have? 

Smoky Mountain Secrets: Love and danger collide in the Southern wilderness