Since the case is as cold as the corpse, Samantha turns to the cutting-edge science of genetic genealogy to unravel the dark history of a gruesome unsolved murder and identify the body. But Nick is obstructing her at every turn. Then a targeted hit and run and a break-in force them to seek refuge in San Antonio’s forgotten historic sites and underground tunnels.

Despite their differences, Samantha is falling for the jaded detective. And Nick cares for her more than he should. But coming clean about his past—and the reason he’s been dragging his feet during the investigation—could end his career and put his deceased partner’s family in jeopardy. As the final puzzle pieces fall into place and Samantha discovers the truth, Nick will have to face his own demons and the corruption rampant in the SAPD to save her from a cunning killer.

Can love survive their buried secrets?