YMMV: The Lost Symbol
- Ending Fatigue: The book reaches its big reveal, then subjects the reader to several additional chapters of dull exposition.
- Fridge Logic: It's mentioned that Sato was born in the Manzanar internment camp during World War II, and that because of it she "had never forgotten the horrors of war, or the perils of insufficient military intelligence." The problem with that? If she was born in Manzanar, she would have been THREE when the war was over. It's possible her parents could have told her about it later, but still.
- Like You Would Really Do It: Kill off Robert Langdon? Really?
- Magnificent Bastard: Mal'akh is easily one of the most cunning and manipulative villains in all of literature.
- Nightmare Fuel: It's bad enough that Mal'akh drowns Katherine's assistant and (seemingly) Langdon (one in a tank of ethanol, the other in a coffin filling with water compounded with his claustrophia), but the point-of-view switches to those characters in their last moments submerged and dying. At least we learn Langdon averts death, but he's gonna need some therapy...
- Surprisingly Improved Sequel: Dan Brown seems to have learned several lessons from critics of The Da Vinci Code and taken them to heart.
- The Untwist: The apparent Big Bad genuinely turns out to be the actual Big Bad, rather than The Lancer or The Obi-Wan suddenly pulling a Face-Heel Turn and revealing themselves to have been the mastermind all along. Since this goes against the convention established in every single one of his previous books, this also counts as a Meta Twist.