im not sure at all,but i think it does because have you ever heard of an author who lets you have a sneak peek at the next book, then they never write it? if you go to the infernal devices website it shows another book called "Clockwork Princess". i think even though it doesnt really show the book it does exist somewhere.i mean who gives previews of books and then retires? its just so sad that i cant find it though. i would love to see if tessa and jem do get married or jem falls for wills sister.and if jem does falls for Cecile, than will tessa and will fall for each other?because if they(tessa and will)do get together than will jace herondale(mortal instruments)be their great great great grandson?

I think there is one thing we can all agree on. And that is that Six-Fingered Nigel is everyone's favorite character who is only mentioned, never met. He doesn't even reallly exist . . . But who cares!(At least I don't think we meet him. I havent finished the book yet.) I mean:
1: HE'S A MIDGET IN A DRESS WHO ROBS PEOPLE!
2: HIS NAME IS TOO FUNNY!
3: HE'S JUST AMAZING.

If him and Magnus Bane (My other favorite Cassandra Clare character) got in a fight, who would win? I love Magnus, but I think Nigel would pour a pitcher of gin over his head..... Close one.

"In Clockwork Prince, with the Magister vanished and the clock counting down on how long Charlotte can keep control of the Institute away from Benedict Lightwood, Will, Jem and Tessa must dig into the Magister's past to predict what he will do in the future, But secrets about the Magister aren't all they find buried — Tessa begins to uncover the truth about her own birth, and the ghosts of Will's past return to haunt him. As Tessa grows closer to Jem, and Will is driven further toward the brink of madness by jealousy and guilt, will they discover the truth in time to halt the next phase of the Magister's evil plan?"