James Fennimore Cooper's Literary MistakesThis article collects "Dan Brown's 20 Worst Sentences" so you don't have to.
Only 20?
Some examples:
17. Deception Point, chapter 8: Overhanging her precarious body was a jaundiced face whose skin resembled a sheet of parchment paper punctured by two emotionless eyes.
It’s not clear what Brown thinks ‘precarious’ means here.
16. The Da Vinci Code, chapter 4: A voice spoke, chillingly close. "Do not move." On his hands and knees, the curator froze, turning his head slowly. Only fifteen feet away, outside the sealed gate, the mountainous silhouette of his attacker stared through the iron bars. He was broad and tall, with ghost-pale skin and thinning white hair. His irises were pink with dark red pupils.
A silhouette with white hair and pink irises stood chillingly close but 15 feet away. What’s wrong with this picture?
And:
14. Angels and Demons, chapter 100: Bernini's Fountain of the Four Rivers glorified the four major rivers of the Old World - The Nile, Ganges, Danube, and Rio Plata.
The Rio de la Plata. Between Argentina and Uruguay. One of the major rivers of the Old World. Apparently.
And:
9. The Da Vinci Code, chapter 32: The vehicle was easily the smallest car Langdon had ever seen. "SmartCar," she said. "A hundred kilometers to the liter."
Pro tip: when fleeing from the police, take a moment to boast about your getaway vehicle’s fuel efficiency. And get it wrong by a factor of five. SmartCars do about 20km (12 miles) to the litre.
How like Dan Brown - a show-off about his knowledge of technical trivia, but too lazy to do any research.
Finally:
5. Angels and Demons, chapter 4: learning the ropes in the trenches.
Learning the ropes (of a naval ship) while in the trenches (with the army in the First World War). It’s a military education, certainly.
4, 3, and 2. The Da Vinci Code, opening sentence: Renowned curator Jacques Saunière staggered through the vaulted archway of the museum's Grand Gallery.
Angels and Demons, opening sentence: Physicist Leonardo Vetra smelled burning flesh, and he knew it was his own.
Deception Point, opening sentences: Death, in this forsaken place, could come in countless forms. Geologist Charles Brophy had endured the savage splendor of this terrain for years, and yet nothing could prepare him for a fate as barbarous and unnatural as the one about to befall him.
Professor Pullum: "Renowned author Dan Brown staggered through his formulaic opening sentence".
And there is so much more. From my 2004 review -
"I've read the Da Vinci Code so you don't have to." - there's this:
Yet another lame literary device is the “convenient selective stupidity” strategy. Hence, we have the “Papal Bull” Captain Bezu Fache, who has intuited that Langdon is guilty of murder, think nothing of the fact that a cryptographer shows up at the crime scene(!?!) and claims to have a message for his chief suspect from the American embassy.(!?!) (p. 51- 53.) Of course, it could well be the case that French cryptographers have a long-standing tradition of providing answering services for various embassies, but I was skeptical the moment I read this gambit. Strangely, though, Fache, a determined man interested in railroading Langdon, wasn’t.
Perhaps it is time to hand Western Civilization over to the Muslims if this is the most rewarded form of modern writing.