The Vanishing Shadow is a 12 chapter 1934 Universal science fiction film serial directed by Lew Landers. Stanley Stanfield is the inventor of the Vanishing Ray, a wearable device which, when active, leaves only the user's shadow still visible. After meeting with fellow scientist, Carl Van Dorn, a prototype Ray is built (along with many other sci-fi gadgets and a giant robot). Stanley intends to sell bonds to finance his invention. He inherited them from his late father, the publisher and editor of the local Tribune newspaper, but the stockbroker he meets is corruptly involved with Wade Barnett, the businessman who hounded Stanley's father to his death. Barnett wants the bonds and will go to any length to acquire them. A conflict ensues between Stanley and Barnett during the 12 chapter serial. However, Stanley's new girlfriend, Gloria Grant, is really Gloria Barnett, his enemy's estranged daughter.

Cast

Cast Onslow Stevens as Stanley Stanfield, inventor of the Vanishing Ray and son of the late editor of the Tribune newspaper.
Ada Ince as Gloria Grant, Stanfield's girlfriend, who is also the estranged daughter of Ward Barnett, having changed her name from the original Gloria Barnett.
James Durkin as Carl Van Dorn, mad scientist ally of Stanfield
Walter Miller as Ward Barnett, villainous businessman
Richard Cramer as Dorgan, Barnett's spear-point heavy


text from wikipedia