Have you ever listened to the audio version of The Harbinger? You can download it for free when you pre-order a copy of The Book of Mysteries (out Sept 6th!). Check it out here http://buff.ly/29O8WCHHave you ever listened to the audio version of The Harbinger? You can download it for free when you pre-order a copy of The Book of Mysteries (out Sept 6th!). Check it out here http://buff.ly/29O8WCH