External Forces: Audiobook
Book 2 of the Marrowbone Spells series
According to The Books Insider's catalog data, the External Forces audiobook runs 14.4 hours unabridged, narrated by Peter Kenny (about 9.6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 14.4 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 29 days |
| 1 hour / day | 15 days |
| 2 hours / day | 8 days |
| 1 hour / day at 1.5× | 10 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 14.4 hours, it runs longer than 85% of the 12,109 Fantasy audiobooks in our catalog.
Catching up on The Marrowbone Spells
This is book 2. Book 1 runs 11.4 hours before it; books 1 to 2 run 25.7 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Innate Magic | 11.4 hrs |
| 2 | External Forces | 14.4 hrs |
More narrated by Peter Kenny
Peter Kenny narrates 148 unabridged audiobooks in our catalog, 1,602 hours in all.
About as long, on the Fantasy shelf
1,093 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
External Forces is book 2 of Shannon Fay's Marrowbone Spells series: a 14.4-hour unabridged recording, read by Peter Kenny, released November 8, 2022, on the Fantasy and Historical (Science Fiction & Fantasy) shelves.
The listen at a glance
- Length
- 14.4 hrs
- Narrated by
- Peter Kenny
- Released
- November 8, 2022
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Fantasy, Historical (Science Fiction & Fantasy)
- Series
- The Marrowbone Spells #2
- ISBN
- 9781713659280
How to listen to External Forces 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 External Forces audiobook?
External Forces runs 14.4 hours unabridged. At 1.5× speed that drops to roughly 9.6 hours.
Is the External Forces audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates External Forces?
External Forces is narrated by Peter Kenny.
Is External Forces worth listening to at 1.5× speed?
At 1.5× you'd finish in about 9.6 hours, saving 4.8 hours.