The 39 Clues Wiki
The 39 Clues Wiki

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Sidney George Reilly is the famous 'Ace of Spies'.


Starting out as a British spy, Sidney did activities in the Czarist Russian Empire, also serving the Japanese. He changed sides many times, always out for himself, even through the first world war. He always had an underlying British connection though. The Lucian's used him to figure out the branch of James Cahill (a Madrigal agent). He was being given orders by an 'M', possibly a British contact. He was finally outwitted and executed by Soviet Ekaterina agents.

Abilities and Traits[]

Sidney was a master of deception, and very few photographs of him exist.


  • Card 41
  • Lucian Archives: Death of Sidney George Reilly.