BLUE HOUR, THE - Doubleday

She no longer sleeps when the tide is out, she only rests when the sea separates her from the land. When she knows no one can sneak up on her.

Eris, an island with only one house, one inhabitant, one way out.

Unreachable from the Scottish mainland for twelve hours each day.

Once home to Vanessa. A famous artist whose notoriously unfaithful husband disappeared twenty years ago.

Now home to Grace. A solitary creature of the tides, content in her own isolation.

But when a shocking discovery is made in an art gallery far away in London, a visitor comes calling.

And the secrets of Eris threaten to emerge . . .