To solve the most heinous murder in the history of Texas, Colby investigator Lyle McCaleb has an unusual mission: find and protect the killer's long-lost daughter. But she turns out to be tough - and gorgeous - rancher Sadie Gilmore, Lyle's first and only love!

Now the mysterious past she barely remembers is threatening her very existence. Can Lyle regain Sadie's trust while concealing the secret that may devastate her...?