A London doctor is called in by young Lady Studley to attend her husband at their Wiltshire estate. The doctor discovers that the wife is dying of tuberculosis, and that she is causing the nervous illness she had reported in her husband by appearing nightly as a ghostly radiant eye in his room. A double-backed wardrobe, a lamp and a cloak are her props. She wished her husband to die with her ... but dies alone, the doctor protecting her secret. Light, pseudo-detective tale. (PB)