At a private showing in the Louvre, Napoleon Bonaparte's great-great-grand niece Margot Steiner admires the painting of her famous ancestor while wearing a precious Ceylon sapphire necklace commissioned by the emperor himself. After getting caught in a commotion on the crowded staircase, however, Mrs. Steiner discovers that her necklace is gone and the suspicious young woman who started the commotion has melted away into the throng...
Rune...