HellworldBook - 2017
Five years ago Abby's mother, a co-host of a ghost hunting reality show, disappeared with her crew in a "haunted" cave in Arizona. Now Abby plans to go to the same cave and find out what happened there. Charlie, son of the other co-host, gets some friends to accompany them. But what they stumble across in that primordial cave is nothing they could have ever imagined.
Publisher: New York : Simon Pulse, 2017
Edition: First Simon Pulse hardcover edition
Characteristics: 297 pages ; 22 cm
Alternative Title: Hell world