Name of a movie please? Starring Susan Hampshire?

Question

This was on UK tv quite a few years ago. It starred Susan Hampshire. She was on holiday with her husband, walking on the beach. He slips on a rock, hits his head and dies. It is a remote area so he is taken to an outbuilding adjoining their holiday cottage and laid out. Next day he's gone and then turns up in the cottage (looking a bit pale!) She thinks he must have just been knocked out but he is actually dead and gradually deteriorates over the next few days!
Most movies area repeated on TV but I have never seen this one since!!

Answer 1

Neither the Sea Nor the Sand