The Drowning People - Richard Mason

It is a cold afternoon in winter. An old man sits in a room high above the sea, watching the sun set. It is twenty-four hours since the death of his wife at Seton Castle, the home they had shared for more than forty years. And as it grows dark, he tries to make sense of a life only recently understood; and to explain how he, by no means a violent man, has come to kill in cold blood...