Serenity Submerged (The Shelby Alexander Thriller Series #4)

A mysterious woman with a hidden agenda. A deadly secret hidden at the depths of a lake. And someone close to Shelby is marked for death.

A woman claiming to be an FBI agent arrives at Shelby's door and presents him with a photograph, asking if he recognizes the man in the picture. Shelby is shocked to see the face of a dear friend staring back at him.

But the woman is not the only predator lurking in the shadows. A group of hired assassins have descended upon Serenity with a single to kill. And it's up to Shelby to make sure that the bullets fly in the right direction.

Relationships are put to the test, secrets are uncovered, and nothing is as it seems. Serenity will never be the same after the events of this gripping thriller. The stakes have never been higher, and Shelby must use all of his skills to survive and protect those he loves.