In Faeries of Dreamdark: Blackbringer, author Laini taylor has created a world of faeries, imps, devils, djinns that is as believable as it is complex.  Magpie Windwitch, a hundred year old faerie sprout, along with her band of faitfhul crows, has the job of recapturing the devils that humans have freed.  She's seen all kinds, but this newest snag isn't like the others;  it gives Mags the shivers.  The seal on its bottle bears the mark of the Magruwen, the Djinn King, who dreamed the world into existence.  Plus, this creature didn't leave behind any of they typical devil signs.  Her search for this new threat takes Magpie to new and dangerous places wehre she finds out who she really is.

On Laini's website: www.lainitaylor.com she posts a quote by Albert Einstein:  "If you want your children to be bright, read them fairy tales.  If you want your children to be brilliant, read them even more fairy tales."  I'm suspecting Laini's parents must have read her a lot of fairy tales!