I just finished City of Ashes.
All I can say is, Jace is in no way Clary's brother! First off, generally books end happily. And Clare hasn't really made a strong point for Simon and Clary in the books, and even now with Maia has made it pretty clear that Simon and Clary won't be together. So Clary has to be with someone, and the only other option is Jace. But ew, he can't be it if he's really her brother! So then the Inquisitor made a big deal about Jace and his scar, and then flippin DIED for him! He can't just be Valentine's son or she'd never do that! My current theory is that Jace is the child the Inquistor's son's first wife, and he somehow got a scar when he was little and that's how she knows. But they thought he was dead or something, because Valentine made it look like that.
For those of you who have read the last book this may sound crazy and I may be off-course, but that's what I'm thinking right now.
Team Edward&Esme~SBS Assistant 2 the Cobosses~APPC
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