I know someone who refuses to read a series until it's finished because he can't stand waiting for the next book to be written. I have the opposite problem in that I read a good book and then hope and hope and hope for a sequel to be written. Currently, I'm on tenterhooks hoping for another book from both Sarwat Chadda and Sage Blackwood.
Sarwat Chadda wrote
The Savage Fortress, which features Indian mythology, archeology, and action adventure. It may be a retelling of the
Ramayana legend, but it reads like a combination of young Indiana Jones, a comic book, and an action movie - only with demons and homicidal godesses. So good. The sequel is coming out later this year and I have high hopes.

Sage Blackwood's newest book is
Jinx, about a young orphan boy taken in by a wizard of dubious character who lives in the middle of a dangerous enchanted forest. And you may think to yourself, "This sounds like every fairytale or fantasy book ever," but it really isn't. Jinx has some unusual talents, there are cursed children, witches who ride butterchurns, and a richly detailed world with a whole background story of politics, magic, betrayal, and wars. And I need there to be more books in this world!
So there you have it - two books that currently have me repeatedly checking the catolog to see if their sequels have magically appeared yet.
~ Book Ninja
P.S. Yes, they're technically Children's books, but don't judge me or the books by that, ok? Just read them, they're so worth it. Remember, Harry Potter is technically a Children's book too!