Murder by Death

I know exactly what I'm reading for this one - I've been saving This Rough Magic by Mary Stewart for just this space.  It's set on the island of Corfu and has an ocean on the cover.

 British actress Lucy Waring believes there is no finer place to be "at liberty" than the sun-drenched isle of Corfu, the alleged locale for Shakespeare's The Tempest. Even the suspicious actions of the handsome, arrogant son of a famous actor cannot dampen her enthusiasm for this wonderland in the Ionian Sea. Then a human corpse is carried ashore on the incoming tide ...