The Secret of Secrets — Reader’s Companion & Study Guide

A groundbreaking discovery. A missing scientist. A secret manuscript. And a mystery that challenges our understanding of the human mind.

Robert Langdon travels to Prague with celebrated noetic scientist Katherine Solomon, who is preparing to reveal discoveries about the nature of human consciousness.

When a brutal murder throws their visit into chaos, Katherine suddenly disappears—and so does the manuscript containing her extraordinary research.

Langdon finds himself hunted by a powerful organisation and pursued by a terrifying adversary linked to Prague’s ancient mythology. His search for Katherine takes him through the mysterious streets and hidden history of Prague before the investigation expands to London and New York.

This comprehensive Coleman’s Notes® Reader’s Companion helps readers navigate Dan Brown’s sixth Robert Langdon thriller, its characters, scientific ideas, historical references, symbols and complex mystery.

Inside the guide: Story in Five Minutes; where The Secret of Secrets fits in the Robert Langdon series; main characters; character relationship guide; central mystery at a glance; Robert Langdon & Katherine Solomon; Prague; noetic science; consciousness and the human mind; the missing manuscript; key organisations and adversaries; detailed chapter companion; symbols and codes; clues and red herrings; major twists and revelations; themes and historical background; science and mysticism; fact versus fiction; meaning of the title; ending explained; 25 book-club and discussion questions; and Quick Recall.

Particular attention is given to the novel’s exploration of human consciousness and the relationship between futuristic science and mystical traditions, which forms the intellectual heart of Langdon’s latest investigation.

Ideal for readers who have completed the novel and want to revisit its characters, clues, ideas and revelations—or anyone looking for a convenient reference to the complete Robert Langdon series.

Full spoiler warning: This companion discusses the complete novel, including its major revelations and ending.

Individual guide — £4.95
Complete Robert Langdon Collection — £25.95

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Coleman’s Notes® is an independent publication and is not affiliated with or endorsed by Dan Brown, the publisher or rights holders.