Deceived: Book Three of the Avery Tywella Series

Okay, so Avery Tywella isn't the half-Demon she always thought she was. But she's still a kickass Human's Rights agent and this time she just might have more than she can handle.
Witches are disappearing. Normally that wouldn't be Avery's division but the Humans who were close to the missing Witches are having their minds manipulated and when the bodies of one of the Witches and her Human husband are found, the killer turns out to be a creature of legend.
With her last case still unsolved...