Shadow's captive
(Book)

"Want a puppy, little girl? Former FBI agent Rebecca West came to Shadow Island to relax and clear her head, not step into a dead sheriff’s long worn shoes. Here she is, though, Interim Sheriff over a small department grieving for their boss and friend. But not for long. Before she can resign from the unwanted position, a little girl goes missing. On vacation with her parents, the eight-year-old was last seen outside her family’s vacation rental drawing on the sidewalk with a box of chalk. Now she’s gone. Did the girl wander off and get lost or maybe pulled out by the tide? Was she lured away? Or has she become the victim of something more sinister on Shadow Island, where a darkness simmers just below the paradisiacal surface? When Rebecca discovers two similar abductions nearby within the week, she fears the worst. With a lot of ground to cover, few deputies to help, and the events surrounding Sheriff Wallace’s death haunting them all, can Rebecca and her team find the young girls before it’s too late?" --author's website.