Princess Romanoff.

Princess Fedora Romanoff, a wealthy, beautiful St. Petersburg widow, is betrothed to Vladimir Boroff, a young man of high social position in the Russian capital. On the eve of their wedding, Vladimir is murdered and Princess Fedora, transformed by the tragedy from a gentle, loving woman into a tigress, vows to devote her life to finding and punishing the slayer of her beloved. Her quest takes her to New York City.