A King's Ransom, and was the first one to figure out that Dan Cahill was gathering all 39 Clues by bribing chemical supplies.
- LaCher Siffright
- Isabel Kabra
- Jake Rosenbloom
- Damien Vesper III (on the card as Dave Speminer)
- Beatrice Cahill
- Arthur Trent
Vesper Two also handles all disciplinary issues, and oversees operations and plan missions.
Communication skills, ruthlessness, and a talent for torture.
- She believes that Dan can be turned, though Vesper One seems to disagree.
- Vesper Two first appears in A King's Ransom observing Dan collecting Clues.
- She has ties to Dan, as mentioned in A King's Ransom.
- She wants to overthrow Vesper One, and become Vesper One herself.
- She hates animals.
- She also drinks the Master Serum that Dan Cahill created.
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