The Abducted Ambassador
Published in Cassell's Magazine, August 1899. Collected in the next year.
Aide Lerestelle was uninterested in receiving visitors when Monsieur Roché calls, this time to ask her assistance in the 'absurd' (her word) abduction of the English Ambassador. Roché agrees with her assessment, telling her the news of the kidnapping "is true and also that it is false". He needs her help because in truth the Ambassador is in possession of secret documents to France from Italy and it is vital he no longer have them.