Matthew Versigny, the head of an American diamond concern, travels abroad with his sister Marguerite to learn the source of some imitation stones which are so perfect that even his company h... Read allMatthew Versigny, the head of an American diamond concern, travels abroad with his sister Marguerite to learn the source of some imitation stones which are so perfect that even his company has purchased them. In Paris, they join forces with Paul Bernac, a special agent of the Fre... Read allMatthew Versigny, the head of an American diamond concern, travels abroad with his sister Marguerite to learn the source of some imitation stones which are so perfect that even his company has purchased them. In Paris, they join forces with Paul Bernac, a special agent of the French Secret Service, and Andre Zarnoff, the chemist who invented the formula for the fake s... Read all
