I'm in the process of writing something that will probably end up novella length if I finish it, and I really want to call it "The Seventh Sin" but I'm afraid that sounds cliché. Is that what you think at first glance?

There is a book called The Seventh Sign and one called The Seven Deadly Sins and The Seventh Seal. Matter of fact I think they were all best sellers.. yes it's a good title.

What about the first six?

What about the first six?

That's what the story is about :]

There are no copyrights on titles, so even if there is another book by this title, you are welcome to use it too.