Black Fall (Jessica Blackwood)

"As magician-turned-FBI agent Jessica Blackwood struggles to connect a series of seemingly unrelated, but equally bizarre and sinister, crimes in Black Fall--Andrew Mayne's third book in the series that began with self-published eBook phenomenon Angel Killer--she is forced to accept that only one twisted, brilliant mind could be behind them...and that the Warlock is planning one final, catastrophic act"--