Pros:* Hex Hall world continues!* Izzy and Sophie are different characters!* Explores more of the prodigumCons:* Short books* Ghost?I really appreciate that Izzy is not Sophie 2.0. So many times in a spinoff series the new main character reads exactly like the old one. This was a fun, new adventure in the Hex Hall world with strong ties to the first trilogy, but it really stands on its own.