The Unknown Purple

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.

Top Billed Cast

Henry B. Walthall

Peter Marchmont / Victor Cromport

Alice Lake

Jewel Marchmont

Stuart Holmes

James Dawson

Helen Ferguson

Ruth Marsh

Frankie Lee

Bobbie