Cold Case Murder Mystery — Nicole Helm

He's retired from the protector business, but a dangerous discovery changes everything

Rancher Zeke Daniels left his secret agent career -- and his doomed romance with Brooke Campbell -- in the past. Until the forensic anthropologist stumbles across Bent County's sinister secret…and attracts a stalker in the process. Brooke refuses to quit the job. And there's no way in hell Zeke will leave her unprotected. But as his professionalism is challenged by their lingering feelings, his determination to protect remains steadfast -- from the stalker, the danger and the violent serial killer using the caves as his burial ground…

From Harlequin Intrigue: Seek thrills. Solve crimes. Justice served.

Discover more action-packed stories in the Hudson Sibling Solutions series. All books are stand-alone with uplifting endings but were published in the following order:

Book 1: Cold Case Kidnapping
Book 2: Cold Case Identity
Book 3: Cold Case Investigation
Book 4: Cold Case Scandal
Book 5: Cold Case Protection
Book 6: Cold Case Discovery
Book 7: Cold Case Murder Mystery