In Brief Authority: Unabridged: Audiobook
According to The Books Insider's catalog data, the In Brief Authority: Unabridged audiobook runs 10.8 hours unabridged, narrated by Caroline Collins (about 7.2 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 10.8 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 22 days |
| 1 hour / day | 11 days |
| 2 hours / day | 6 days |
| 1 hour / day at 1.5× | 8 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 10.8 hours, it runs longer than 70% of the 62,518 Fiction audiobooks in our catalog.
More narrated by Caroline Collins
Caroline Collins narrates 15 unabridged audiobooks in our catalog, 135 hours in all.
About as long, on the Fiction shelf
14,089 Fiction 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
In Brief Authority: Unabridged is an audiobook by F. Anstey: a 10.8-hour unabridged recording, read by Caroline Collins, released December 21, 2017, on the Fiction shelf.
The listen at a glance
- Length
- 10.8 hrs
- Narrated by
- Caroline Collins
- Released
- December 21, 2017
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Fiction
- ISBN
- 4251177556524
How to listen to In Brief Authority: Unabridged 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 In Brief Authority: Unabridged audiobook?
In Brief Authority: Unabridged runs 10.8 hours unabridged. At 1.5× speed that drops to roughly 7.2 hours.
Is the In Brief Authority: Unabridged audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates In Brief Authority: Unabridged?
In Brief Authority: Unabridged is narrated by Caroline Collins.
Is In Brief Authority: Unabridged worth listening to at 1.5× speed?
At 1.5× you'd finish in about 7.2 hours, saving 3.6 hours.