When Iris Galloway inherits her great-aunt's cottage on a remote Scottish loch, the terms are simple: live there one year, and it's hers.
She doesn't know about the disappearances yet, nor does she know about the handsome man who swims in the loch at night, who watches her cottage from the dark water, and who appears at her door very wet, very naked, and asking to come in.
Meanwhile, the locals warn her about a murderer on the loose, the police are in over their heads, and her aunt's letters say to keep the salt lines around the house and the doors locked after sundown.
And never, ever invite him inside.
But Iris has spent her whole life being careful.
And this wicked stranger is going to ruin her for it.