We're the D'Artigo Sisters: Half-human, half-Faerie, we're savvy--and sexy--operatives for the Otherworld Intelligence Agency. But our mixed-blood heritage short-circuits our talents at all the wrong times. My sister Delilah shapeshifts into a tabby cat whenever she's stressed. Menolly's a vampire who's still trying to get the hang of being undead. And me? I'm Camille--a wicked-good witch. Except my magic is as unpredictable as the weather, which my enemies are about to find out the hard way...

That's the description of the first book if people haven't heard of the series.

Any lovers of this very long series?