Books as Clickbait Headlines

[ParkingWitch]

Aristocratic sleuth solves mysteries! "Magical!"

So many possibilities.
We have Lord Peter Whimsey. Bertie Wooster is described as a British gentleman though I can't remember a specific title. And Sherlock Holmes has said that he came from a family of country squires.

[mjr]

Single/Divorced/Widow/Widower meets someone, resists at first, then falls in love. They live happily ever after.

-- Any Harlequin novel ever written.

[catcul]

Monster terrorizes Denmark. You won't believe how this hero disarms the monster!

[XCashier]

Mine are probably way too easy, but here goes...

Teenage girl thrown into violent murder ring! You won't believe what she does!

Private school student discovers giant monster in school's walls! You won't believe what it is!

Innocent-looking carnival has dark secret -- two boys and one old man discover what it is!

[Ironclad Alibi]

Private school student discovers giant monster in school's walls! You won't believe what it is!

Harry Potter and the Chamber of Secrets

Innocent-looking carnival has dark secret -- two boys and one old man discover what it is!

Something Wicked This Way Comes by Ray Bradbury.

[Jay 2K Winger]

Teenage girl thrown into violent murder ring! You won't believe what she does!

The Hunger Games

Monster terrorizes Denmark. You won't believe how this hero disarms the monster!

Beowulf