Who is the leader of the abduction ? What evidence dose he now have that will force marguerite to help him discover the identity of the scarlet pimpernel ?

The Chauvelin was the leader of the abduction.

“Not a bad day’s work on the whole,” he muttered, as he quietly took off his mask, and his pale, fox-like eyes glittered in the red glow of the fire. “Not a bad day’s work.”

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The new evidence is a note signed by Marguerite's brother that he will use for blackmail.

“Armand St. Just a traitor after all,” he murmured. “Now, fair Marguerite Blakeney,” he added viciously between his clenched teeth, “I think that you will help me to find the Scarlet Pimpernel.”

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