One night socialite banker Baron Cassini attends the stage show of Eugene Charlier, who resembles him and imitates him in his act. The Baron is attracted to Charlier's jealous stage partner Mimi, while Eugene has similar ideas about Baroness Geneviev...
Ignoring an ancient prophecy, evil brother Gregor seeks to maintain his feudal power on his his Tyrolean estate by murdering and impersonating his benevolent younger twin....
The heirs of the dying owner of a valuable radium mine are being murdered as a mining engineer tries to uncover the killer and clear his cousin's name....