French aristocrat falls for Russian nightclub singer, gets involved in underground Russian revolutionary movement. Part 1 and 2 were re-edited in the surviving copy named Daughter of the night.

French aristocrat falls for Russian nightclub singer, gets involved in underground Russian revolutionary movement. Parts 1 and 2 were re-edited in the only surviving copy named Daughter of the Night.

When doctors fail to cure the young and beautiful Claire Raven, who for inexplicable reasons seems to have fallen under a spell, Professor Mors, an expert in the field of hypnosis, is called in to help.