The Recurring Cast
Character · Langdon · 2 books

Katherine Solomon

Noetic scientist · Dan Brown

Katherine Solomon is a scientist studying human consciousness, the sister of Langdon’s mentor Peter Solomon.

Spoiler-free profile written for The Recurring Cast.

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Character facts

First appearance
The Lost Symbol (2009)
Latest appearance
The Secret of Secrets (2025)
Books
2 (2 major)
Series
Robert Langdon
Author
Dan Brown
Circle
Langdon

Where to meet Katherine Solomon

Katherine Solomon first appears in The Lost Symbol (2009), in a major role, book 3 of the Robert Langdon series.

Buy The Lost Symbol

Every book with Katherine Solomon

In publication order, with the size of their role in each.

  1. 2009MThe Lost Symbolmajor role · Robert LangdonBuy
  2. 2025MThe Secret of Secretsmajor role · Robert LangdonBuy

Appears most often with

CharacterBooks together
Robert LangdonHarvard professor of symbology2