The 39 Clues Wiki
The 39 Clues Wiki
Card 278: Vesper Scientist
Type: Secret
Rarity: Common
Puzzle: Yes
Clue: No
Top Secret: No
Where To Get This Card: The Dead of Night


"The Cahills in the command center need your help figuring out which of these six suspects is the Vesper Scientist. Are you ready to join the fight against this dangerous enemy?"


The puzzle says 'Investigate Astrid's Death' when looking at it in front of a mirror.

Level: 1


  • Vesper Four is Sandy Bancroft.
  • At the back is a code that says "Patton was V", which means that George S. Patton was a Vesper and could have been part of the Council of Six.
  • The mystery person is Ian.