The Unknown Purple

本片是一部美国悬疑片，由Roland West导演，由Henry B. Walthall/Alice Lake/Stuart Holmes主演。

剧情简介：Inventor Peter Marchmont has discovered a purple light that renders the user invisible. On his release from prison, Marchmont, disguised as Victor Cromport, uses the light to revenge himself against his former wife, Jewel, and her partner, James Dawson, who framed him for theft. Making himself invisible, Marchmont gradually ruins Dawson. He so wins Jewel's confidence and love that she is willing to kill Dawson at Marchmont's request. Finally, Marchmont leaves the scheming couple to their own misery and marries Jewel's sister, Ruth Marsh.

类型：悬疑 / 科幻

地区：美国

导演：Roland West

演员：Henry B. Walthall / Alice Lake / Stuart Holmes / Helen Ferguson / Frankie Lee / Ethel Grey Terry / James Morrison / Johnny Arthur / Richard Wayne