ルドルフ・ヘス
Picknett and Prince perform most of the research for their books themselves, though they are sometimes helped by several friends and fellow researchers. They have credited Keith Prince as a main contributor for their work on the Turin Shroud, Philip Coppens in "The Stargate Conspiracy" (published in 1999), and Robert Brydon for their work on "Rudolf Hess" (titled "Double Standards: The Rudolf Hess Cover-Up" and published in 2001).