Amanda Donohoe in Castaway (1986)

Middle-aged Gerald Kingsland advertises in a London paper for a female companion to spend a year with him on a desert island. The young Lucy Irving takes a chance on contacting him and after a couple of meetings they decide to go ahead. Once on the island things prove a lot less idyllic than in the movies, and gradually it becomes clear that it is Lucy who has the desire and the strength to try and see the year through. With Oliver Reed and Amanda Donoho. 117 min.