Jenny investigaves a new type of explosive powder—one that makes dynamite or any other known explosive look like a child's toy in comparison. The one person who may be able to help her is Professor Carl Seigfried of Vienna.
The Robbery in the Sleeping Car
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The Diamonds of the Princess
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The Explosion of the Treasury
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The Duchess of Chiselhurst’s Ball
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The Daily Bugle Misses "A Hit"
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The Search for the Girl
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The Indiscretion of the Prime Minister
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