A married couple, who recently lost their daughter in a drowning accident, are in Venice, where the husband is working to restore an old church. After his wife receives an ominous warning from a psychic she's met, the husband becomes haunted by visions of his dead daughter.
That's the plot, but there's so much going on here with Nicolas Roeg's stylistic direction that evokes the fear and dread lurking beneath the surface, that creeping unease that something awful is always about to happen. One of the best '70s horror films. I'd recently watched Roeg's Walkabout and he really does strike me as one of the most interesting filmmakers of the era, a master of tone and atmosphere.
Based on a novel by Daphne du Maurier.