The Secret History of MI6: 1909-1949: Audiobook
According to The Books Insider's catalog data, The Secret History of MI6: 1909-1949 runs 37 hours as an unabridged audiobook, narrated by John Curless (about 24.6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 37 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 74 days |
| 1 hour / day | 37 days |
| 2 hours / day | 19 days |
| 1 hour / day at 1.5× | 25 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 37 hours, it runs longer than 99% of the 7,179 World audiobooks in our catalog.
More narrated by John Curless
John Curless narrates 74 unabridged audiobooks in our catalog, 1,017 hours in all.
About as long, on the World shelf
44 World 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 Secret History of MI6: 1909-1949 is an audiobook by Keith Jeffery: a 37-hour unabridged recording, read by John Curless, released April 29, 2011, on the World shelf.
The listen at a glance
- Length
- 37 hrs
- Narrated by
- John Curless
- Released
- April 29, 2011
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- World
- ISBN
- 9781449866754
How to listen to The Secret History of MI6: 1909-1949 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 History of MI6: 1909-1949 as an audiobook?
The Secret History of MI6: 1909-1949 runs 37 hours unabridged. At 1.5× speed that drops to roughly 24.6 hours.
Is The Secret History of MI6: 1909-1949 free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Secret History of MI6: 1909-1949?
The Secret History of MI6: 1909-1949 is narrated by John Curless.
Is The Secret History of MI6: 1909-1949 worth listening to at 1.5× speed?
At 1.5× you'd finish in about 24.6 hours, saving 12.3 hours.