By Washington Post book critic Ron Charles

With the fall season gearing up, here are some of the biggest titles we're looking forward to reading in September:

Doubleday

Dan Brown, creator of "The Da Vinci Code," is roaring back with his sixth thriller about Harvard symbologist Robert Langdon. In "The Secret of Secrets" (Doubleday), a brilliant scientist is about to publish a revolutionary book about the nature of human consciousness, but nefarious powers will stop at nothing to kill her book – and anyone who stands in their way.

"The Secret of Secrets" by Dan Brown (Doubleday), in Hardcover, Large Print Trade Paperback, eBook and Audio formats, available September 9 via Amazon , Barnes & Noble and Bookshop.org

danbrown.com

Knopf

Excitement is rising on both si

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