A continuation of the film series "Judex" the masked fighter for justice.
Hopson, a prestigious scientist, studies the effect of snake venom to cure many diseases of mankind. His son enlists in the army when the Great War breaks out. A series of circumstances will lead the scientist to change his way of thinking about values and principles that until then he had as immovable.
Paris is prey to an invisible terror against which the police can do nothing: a sinister organization that sows chaos and death. The intrepid journalist Philippe Guérande and his partner embark on a long crusade to put an end to the crimes of the Great Vampire and Irma Vep, his dangerous accomplice. (A ten episode movie serial.)
A mysterious evildoer terrifies the French Riviera. That mysterious character, which is hidden under the personality of James Pearce, a diamond-maker, calls himself The Black X. This time, the Black X has noticed the rich jewels of a celebrated singer and, in the company of her henchmen, is preparing to carry out the great robbery.
Leonce Perret brings home a present for wife Suzanne Grandais. It turns out to be point guards for hat pins. Hat pins with such guards have been outlawed. She is disappointed and refuses to use them. When Leonce seem to get a pin prick in her eye, she is upset. When she discovers he is faking, she decides on her own revenge.