In Paris| in the beginning of the Twentieth Century| Cesar Charron owns a theater at the Rue Morgue where he performs the play "Murders in the Rue Morgue" with his wife Madeleine Charron| who has dreadful nightmares. When there are several murders by acid of people connected to Cesar| the prime suspect of Inspector Vidocq would be Cesar's former partner Rene Marot. But Marot murdered Madeleine's mother many years ago and committed suicide immediately after.