I admit I was initially attracted to Prospero Lost because I was in The Tempest a few years ago, so anything relating to it still catches my eye. This story takes place long after the play, with the idea that Shakespeare knew Prospero, and Prospero told the Bard the tale of his adventures at sea. So the play is part family history for Miranda, Prospero, and the siblings that have come along in the centuries since then.
Miranda Prospero is the daughter of famed Prospero, and in charge of the family business, keeping the elements in line so that the rest of humanity doesn't suffer constant natural disasters. When her father goes missing, leaving a warning for her and her siblings, Miranda sets out to find out what's happening and unearth some family secrets in the meantime.
I really liked the concept behind this book. Although occasionally suffering from an abundance of adverbs, and quite a variety of unnecessary dialog tags, for the most part the writing is fluid and clear. The author pulls in a lot of other fairy tales in small references, like The Well at the World's End (being a key feature in the Prospero family longevity). There's quite a bit of Christmas ... mythology, so I would definitely recommend it for your December reading lists. :)
It is the first book in a trilogy, so be aware of that before you begin!