Comet Rising (Shadow Weaver, Bk. 2)

Emmeline and Lucas are safe from the evil Lady Aisling and her soldiers for the time being. The only thing that mars their peaceful life is Emmeline's imprisoned former shadow, Dar.

Then one night the Cerelia Comet, the reason for their magical abilities, returns… but it's twelve years too early. The return of the comet can only mean one thing: Lady Aisling has a Sky Shaker under her control and is hoping for a new batch of talented children to add to her collection.

Emmeline and Lucas decide to journey to find other magical children to help in the fight against Lady Aisling. But when Dar escapes, and the two friends realize many of the children they seek have already been taken, they know they are in for the fight of their lives.