This was an Audible Original performed as a radio play. A doomsday cult known as the Tribulation is preparing for doomsday, and has the ability to move in and out of the physical world through radio waves. As the protagonist, Stacy Carlson, tries to uncover her past and rescue her husband, lost to The Frequency, she is joined by a boozing conspiracy-nut ex-rock star named Reed Singer, chased by Jesus Freaks of Doom, and discovers why some kids decide to go No Contact with their parents.
The best part of this production was Reed Singer, the smart-ass trainwreck of an ex-musician radio host. The worst part was frequent dramatic electrical discharges and people screaming.
As a sci-fi story, it was okay. The ideas were not terribly original, and I had trouble following how all the pieces fit together in the end, particularly with the AI. This was a fairly low-budget drama, not as good as an actual novel, but better than most sci-fi television.