Vesper Four, also known as The Scientist, is a member of the Vesper Council of Six. Vesper Four is responsible for developing surveillance equipment and weapons. The most recent Vesper Four was Sandy Bancroft.



  • Develops surveillance technology.
  • Builds the Vesper arsenals.
  • Keeps tabs on the Vesper targets.


Engineering expertise, imagination and an appetite for destruction, and also loves to blow things up.


The Dead of Night

Day of Doom


  • He is the least appeared Vesper in the Cahills vs Vespers series who is a member of the Council Of Six.
  • He appears the least in the books, as V-1 is always mentioned.
  • He changes sides suddenly, first to Isabel and then to Damien.
  • Collection

    Cahills Vs Vespers

Start a Discussion Discussions about Vesper Four

  • Vesper Four

    3 messages
    • wrote:It is ture that Sandy Bancroft has been briefly mentioned in Dead of Night and Shatterproof. But like Luna Amato (V-...
    • He is now v-1 in the books
  • V-4

    • ''Sandy, really? I just thought he was a back up character. He's barley in the book's.This is just messed up.''
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