The Catherine-Wheel - Patricia Wentworth

There was a certain heavy air of intrigue and mystery emanating from the old inn high on the cliff top. The Catherine-Wheel had once been a home for pirates and smugglers, but now is looked like it was harbouring a murderer.

It had begun with an advertisement in the paper requesting descendants of the late innkeeper, Jeremiah Taverner, to stay for a weekend at the inn. They had arrived, a mixed assortment, to the family reunion eager to discover the secrets of their ancestry. But one of them had been hideously murdered, bringing the inn's stormy past into frightening focus.

Scotland Yard, already suspicious of dope smuggling in the area, sends Maud Silver to investigate before the fireworks start to fly.