Montgomery" starred in the Lady in the Lake, taking the role of detective Philip Marlowe. The camera's seeing what a character sees is not a new device. The closeup of what is noticed suddenly, for example, the long shot of the eagerly awaited train, and the moving shot showing how the pursuing horseman looks to the pursued as he glances over his shoulder, are familiar. Nor is identifying the audience with the central character new; James A. Fitzpatrick, in his Travelogues, has been taking "you" along on exotic excursions for years. Not even the camera's seeing what detective Philip Marlowe saw is entirely new. In Murder, My Sweet the camera watched a powerful, enraged man strangle Philip Marlowe (You and Dick Powell), and later in the same sequence the camera saw the whirling blackness of Philip Marlowe's becoming unconscious. In 1931, when Rouben Mamoulian made Dr. Jekyll and Mr. Hyde, he shot the opening sequence from the point of view of a Jekyll who, like Montgomery's Philip Marlowe, became visible to the audience only when he looked into a mirror; Mamoulian dropped the device, however, as soon as the physician stepped onto the lecture platform. Lady in the Lake does represent the first sustained and exclusive use of the