Here Lie The Dead (DCI Logan Book 15), J D Kirk

How many more will die? When the body of a teenager is discovered near Eilean Donan Castle several months after she disappeared, DCI Jack Logan and his team journey across the Highlands to investigate. As they start to unpick the young woman's life, the secrets and lies they expose soon threaten to tear the small, rural community apart. But, when a second girl goes missing in similar circumstances, it isn't just a murder investigation that Jack finds himself running.

It's a race against time.