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.
as Peter Marchmont / Victor Cromport
as Jewel Marchmont
as James Dawson
as Ruth Marsh
as Bobbie
as Mrs. Freddie Goodlittle
as Leslie Bradbury
as Freddie Goodlittle
as George Allison
as Hawkins
as Burton
