"Secret of Secrets" by Dan Brown is a thrilling novel published by Knopf Doubleday Publishing Group in 2025. This hardcover book, part of the Robert Langdon series, spans 688 pages and is illustrated. The novel falls under the genres of thrillers, suspense, technological, and action & adventure, making it a captivating read for fans of Dan Brown's work. With its intricate plot and engaging storytelling, "Secret of Secrets" promises to keep readers on the edge of their seats.

"The Secret of Secrets: A Novel" is a thrilling fiction book by Dan Brown, part of the Robert Langdon series. Published in 2025 by Knopf Doubleday Publishing Group, this hardcover book features 688 pages of suspenseful storytelling. With a unique blend of technological thriller elements and action-packed adventure, this novel is sure to captivate readers with its intriguing plot and engaging characters. Additionally, the book includes illustrations and weighs 33.3 ounces, making it a substantial and visually appealing addition to any book collection."

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This novel is a journey that feels both epic and intimate.

"Secret of Secrets: A Novel" by Dan Brown is a hardcover book published by Knopf Doubleday Publishing Group in 2025. It is the latest addition to the Robert Langdon series, known for its thrilling and suspenseful plots. The novel spans 688 pages and is written in English, offering readers a captivating story filled with action and adventure. Illustrated by the author himself, this fictional work in the thriller genre is sure to entertain fans of Dan Brown's work for years to come.