Laura, a woman in her late 50's just recovering from a sojourn in a mental hospital returns home to her estate in the temporary care of her son and his wife. A rather dubious couple to say the least. While walking in the grounds one morning she hears or thinks she hears groaning sounds emanating from the ground and tries to raise the alarm. Unsurprisingly when help arrives the voice is no longer evident and so the seeds of doubt are raised about her sanity. Caught this one on the box very early one morning and scared me enough to have a really lousy sleep. De Havilland is in her element here as the recovering patient and gives her character enough credibility to even make the viewer wonder as to her mental state. The black & white photography enhances the suspense of the whole story. Unfortunately not available on dvd or video.