They were swept away on an undercurrent of tense emotion!

William Kell, the keeper of a lighthouse on a lonely stretch of coastline, marries cabaret dancer Eileen. His young wife, however, goes on to have an affair with Henry Cass, the handsome assistant later taken on by her husband; when she then begins to flirt with a stranger who is rescued from the wreck of a motor-launch, a chain of shocking events is set in motion...