This book establishes some of the back story for the Elemental Mages series. There is a mismatched pair of girls with special powers and a man and wife who run a school for such gifted children. On the dark side, there is the wizard of London, and the nasty ice-mage who is drawing him further towards Evil… no, she decides to take him over completely!
This particular installment is not much more substantial than cotton candy.
Bibliophage's Buffet 