Saving Sarah by Kathy Ivan

Haunted by memories of war and strangely prophetic dreams, Gaston “Ranger” Boudreau spends his time alone in the Louisiana bayou he calls home. When his former SEAL teammate calls in a favor, Ranger can’t refuse—because a Boudreau always pays his debts.
Romance writer Sarah Sloane is in New Orleans on a mission: To find her missing sister who disappeared during Spring Break. She needs somebody who knows the city—but more, she needs a bodyguard who can keep her safe. One sexy former Navy SEAL might be exactly the person for the job.
As Ranger’s dreams evolve, the dangerous search for Sarah’s sister quickly becomes a race against the clock. Can they find her before it’s too late, or will their quest cost more than one life?