THE SKELETON KEY is a 98,000 adult fantasy novel with a large dose of
An orphan. A street urchin. A miserable thief. Kirin might be all of these things, but that doesn’t stop him from believing he was meant to be Someone Important. So when he stumbles upon a magical key that can open any lock in the world, he’s convinced that destiny has found him at last – not to mention a whole pile of riches. But there is more than gold and jewels
behind the locked doors of Caras-leith, and when Kirin frees a notorious heretic from a secret prison, he sets off a chain of events that will lead to a rupture in the very fabric of the world. Now all that stands between the kingdom and absolute tyranny is a pair of thieves, a feckless prince, a bounty hunter, an architect, and an old man who can’t seem to stay awake.
This isn't specific enough to be a good hook. It's the start though. Start over.