The Books Insiderindependent audiobook data
Billy's Experiment: An Old Castle Audiobook by Jonathan Dunne

Billy's Experiment: An Old Castle Audiobook: Audiobook

According to The Books Insider's catalog data, the Billy's Experiment: An Old Castle Audiobook audiobook runs 10.4 hours unabridged, narrated by Jonathan Dunne (about 7 hours at 1.5× playback speed).

10.4listening hrs
Paranormalstore shelf
2023released
Free for new listeners

The instrument When will you finish it?

Based on 10.4 hours of listening.

Days to finish Billy's Experiment: An Old Castle Audiobook at common listening paces
Your paceYou'll finish in
30 min / day21 days
1 hour / day11 days
2 hours / day6 days
1 hour / day at 1.5×7 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 10.4 hours, it runs longer than 71% of the 8,772 Paranormal audiobooks in our catalog.

About as long, on the Paranormal shelf

1,565 Paranormal 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

Billy's Experiment: An Old Castle Audiobook is an audiobook by Jonathan Dunne: a 10.4-hour unabridged recording, read by Jonathan Dunne, released May 6, 2023, on the Horror and Paranormal shelves.

The listen at a glance

Length
10.4 hrs
Narrated by
Jonathan Dunne
Released
May 6, 2023
Format
Unabridged audiobook
Language
English
Store shelves
Horror, Paranormal
ISBN
9798368917931

How to listen to Billy's Experiment: An Old Castle Audiobook 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 free

Questions listeners ask

How long is the Billy's Experiment: An Old Castle Audiobook audiobook?

Billy's Experiment: An Old Castle Audiobook runs 10.4 hours unabridged. At 1.5× speed that drops to roughly 7 hours.

Is the Billy's Experiment: An Old Castle Audiobook audiobook free?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates Billy's Experiment: An Old Castle Audiobook?

Billy's Experiment: An Old Castle Audiobook is narrated by Jonathan Dunne.

Is Billy's Experiment: An Old Castle Audiobook worth listening to at 1.5× speed?

At 1.5× you'd finish in about 7 hours, saving 3.5 hours.