The Secret of the Underground Room: Audiobook
Book 8 of the Johnny Dixon series
According to The Books Insider's catalog data, The Secret of the Underground Room runs 2.5 hours as an unabridged audiobook, narrated by Johnny Heller (about 1.7 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 2.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 5 days |
| 1 hour / day | 3 days |
| 2 hours / day | 2 days |
| 1 hour / day at 1.5× | 2 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 2.5 hours, it is shorter than 70% of the 7,923 Mystery & Fantasy audiobooks in our catalog.
Catching up on The Johnny Dixon Series
This is book 8. Books 1 to 7 run 23.9 hours before it; books 1 to 12 run 39.5 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | The Curse of the Blue Figurine | 4.3 hrs |
| 2 | The Mummy, the Will, and the Crypt | 3.4 hrs |
| 3 | The Spell of the Sorcerer's Skull | 3.5 hrs |
| 4 | The Revenge of the Wizard's Ghost | 2.8 hrs |
| 5 | The Eyes of the Killer Robot | 3.4 hrs |
| 6 | The Trolley to Yesterday | 3.6 hrs |
| 7 | The Chessmen of Doom | 3 hrs |
| 8 | The Secret of the Underground Room | 2.5 hrs |
| 9 | The Drum, the Doll, and the Zombie | 3.2 hrs |
| 10 | The Hand of the Necromancer | 3.3 hrs |
| 11 | The Bell, the Book, and the Spellbinder | 3 hrs |
| 12 | The Wrath of the Grinning Ghost | 3.4 hrs |
More narrated by Johnny Heller
Johnny Heller narrates 569 unabridged audiobooks in our catalog, 3,574 hours in all.
About as long, on the Mystery & Fantasy shelf
346 Mystery & Fantasy audiobooks in our catalog run within 10% of this length. The most popular on the store:
- Revenge of the Living Dummy (Goosebumps HorrorLand #1)
- Escape From HorrorLand (Goosebumps HorrorLand #11)
- Frozen
- Werewolf of Fever Swamp (Classic Goosebumps #11)
- Surf's Up, Geronimo! / The Wild, Wild West (Geronimo Stilton #2 & #21)
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 Secret of the Underground Room is book 8 of John Bellairs's Johnny Dixon series: a 2.5-hour unabridged recording, read by Johnny Heller, released December 13, 2022, on the Mystery & Fantasy shelf.
The listen at a glance
- Length
- 2.5 hrs
- Narrated by
- Johnny Heller
- Released
- December 13, 2022
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Mystery & Fantasy
- Series
- The Johnny Dixon Series #8
- ISBN
- 9798200982295
How to listen to The Secret of the Underground Room 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 Secret of the Underground Room as an audiobook?
The Secret of the Underground Room runs 2.5 hours unabridged. At 1.5× speed that drops to roughly 1.7 hours.
Is The Secret of the Underground Room free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Secret of the Underground Room?
The Secret of the Underground Room is narrated by Johnny Heller.