The Island – Heather Graham

On a weekend vacation Beth Anderson is unnerved when a stroll on the beach reveals what appears to be a skull. As a stranger approaches, Beth panics and covers the evidence. But when she later returns to the beach, the skull is gone. Determined to find solid evidence to bring to the police, Beth digs deeper into the mystery of the skull and everywhere she goes, Keith Henson, the stranger from the beach, seems to appear. He claims to be keeping an eye on her safety, but Beth senses other motives. Then a body washes ashore, and Beth begins to think she needs more help than she bargained for. Because investigating is a dangerous game, and someone wants to stop Beth from playing.

Below the Surface – Karen Harper

She surfaced from the depths of the sea and was terrifyingly, inexplicably alone.

Briana Devon knows her twin sister would never deliberately leave her but when she emerges from underwater, Daria and their boat have vanished. Fighting rough waves and a fast–approaching storm, Bree doesn't have time to question: if she wants to survive, she has to swim. Exhausted and terrified, Bree barely makes it to a tiny barrier island, where Cole De Roca, who has also taken shelter, revives her. Bound to Cole by the harrowing experience, she turns to him as she struggles to understand what happened to her sister. What was her twin, whom she thought she knew so well, hiding? What really transpired that terrible afternoon? And what secrets lie dormant below the surface?