Cassandra Clare leaves a hint on Wills Family

On tumblr Cassandra Clare answered this question:

Ok, maybe i am splitting some hairs here but I think this means we meet the rest of Wills family in the next Infernal Devices book.

Posted by Rapunzel

P.S I have posted so much Shadowhunter news... I feel like i am about to go into overload. Ah well we can blame it on being busy in the holiday and not have enough time to post it all as it comes out.