Orphan Enid White becomes the ward of a cruel man. She gets close to her guardian's wife and also to his son, who secretly comes to visit when his father is not around.
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.
Three men fall in love with a woman from a window photograph. When they find her living as a recluse in an isolated Hungarian mansion, they decide against a visit because she wouldn't live up to their idealized images of her.