To solve the most heinous murder in Texas history, Colby investigator Lyle McCaleb has an unusual mission: find and protect the killer's long-lost daughter. The complication: she's tough, gorgeous rancher Sadie Gilmore -- Lyle's first and only love. And now the mysterious past she barely remembers is threatening her very existence. Lyle regrets leaving Sadie broken-hearted seven years ago. And as he investigates and gets deeper into danger, he finds it almost impossible to maintain his professionalism around her. But another dilemma threatens their newly rekindled relationship. Can Lyle regain Sadie's trust while concealing the secret that may devastate her?