The Infernal Underground: Audiobook
Book 3 of the Hidden Legends: Prison for Supernatural Offenders series
According to The Books Insider's catalog data, The Infernal Underground runs 22.6 hours as an unabridged audiobook, narrated by Taylor Harvey and A.J. Carter (about 15.1 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 22.6 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 46 days |
| 1 hour / day | 23 days |
| 2 hours / day | 12 days |
| 1 hour / day at 1.5× | 16 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 22.6 hours, it runs longer than 96% of the 12,109 Fantasy audiobooks in our catalog.
Catching up on Hidden Legends: Prison for Supernatural Offenders
This is book 3. Books 1 to 2 run 36.6 hours before it; books 1 to 6 run 142.4 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | The Villain Institute | 19 hrs |
| 2 | The Criminal Lair | 17.6 hrs |
| 3 | The Infernal Underground | 22.6 hrs |
| 4 | The Assassin's Destiny | 25.6 hrs |
| 5 | The Devil's City | 34.4 hrs |
| 6 | The Elven Gate | 23.2 hrs |
More narrated by Taylor Harvey
Taylor Harvey narrates 43 unabridged audiobooks in our catalog, 559 hours in all.
About as long, on the Fantasy shelf
318 Fantasy audiobooks in our catalog run within 10% of this length. The most popular on the store:
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
The Infernal Underground is book 3 of Hidden Legends's Hidden Legends: Prison for Supernatural Offenders series: a 22.6-hour unabridged recording, read by Taylor Harvey and A.J. Carter, released April 6, 2022, on the Fantasy and Paranormal shelves.
The listen at a glance
- Length
- 22.6 hrs
- Narrated by
- Taylor Harvey, A.J. Carter
- Released
- April 6, 2022
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Fantasy, Paranormal
- Series
- Hidden Legends: Prison for Supernatural Offenders #3
- ISBN
- 9781948704755
How to listen to The Infernal Underground free
New members at audiobooks.com get three free audiobooks with the trial.
Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.
Start listening freeQuestions listeners ask
How long is The Infernal Underground as an audiobook?
The Infernal Underground runs 22.6 hours unabridged. At 1.5× speed that drops to roughly 15.1 hours.
Is The Infernal Underground free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Infernal Underground?
The Infernal Underground is narrated by Taylor Harvey and A.J. Carter.
Is The Infernal Underground worth listening to at 1.5× speed?
At 1.5× you'd finish in about 15.1 hours, saving 7.5 hours.