Possible Clues:

• Famous female spy
• Seductive spy
• Seductive female spy
• 1931 role for Greta Garbo
• Spy a curly hair on the rug
• Dutch dancer, and intelligence agent for the Germans during World War I
• Seductive W.W. I spy
• 1931 Garbo role
• Dancer and WWI spy
• Garbo role of '31