1. I think the most interesting novel is the Baskervilles.
2. I want to visit the Bakers.
3. The Browns are very friendly.
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Will you take a look at the following pattern?
the + Baskerville + s
the + Baker + s
the + Brown + s
Are the expressions have the same patterns in the sentence above? Do they convey the same type of meaning?
You are correct about how to make these names plural. Nice job!
For the first sentence, though, I think you need to have the full title of the book, not just the main word in the title. Here's how:
I think the most interesting novel is The Hound of the Baskervilles.