The Affair of the Mysterious Letter: Audiobook
According to The Books Insider's catalog data, The Affair of the Mysterious Letter runs 10.6 hours as an unabridged audiobook, narrated by Nicholas Boulton (about 7.1 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 10.6 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 10.6 hours, it runs longer than 78% of the 22,296 Police & Detective audiobooks in our catalog.
More narrated by Nicholas Boulton
Nicholas Boulton narrates 84 unabridged audiobooks in our catalog, 1,176 hours in all.
About as long, on the Police & Detective shelf
4,694 Police & Detective 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 Affair of the Mysterious Letter is an audiobook by Alexis Hall: a 10.6-hour unabridged recording, read by Nicholas Boulton, released June 18, 2019, on the Police & Detective and Fantasy shelves.
The listen at a glance
- Length
- 10.6 hrs
- Narrated by
- Nicholas Boulton
- Released
- June 18, 2019
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Police & Detective, Fantasy, Historical (Science Fiction & Fantasy)
- ISBN
- 9781984890627
How to listen to The Affair of the Mysterious Letter 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 Affair of the Mysterious Letter as an audiobook?
The Affair of the Mysterious Letter runs 10.6 hours unabridged. At 1.5× speed that drops to roughly 7.1 hours.
Is The Affair of the Mysterious Letter free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Affair of the Mysterious Letter?
The Affair of the Mysterious Letter is narrated by Nicholas Boulton.
Is The Affair of the Mysterious Letter worth listening to at 1.5× speed?
At 1.5× you'd finish in about 7.1 hours, saving 3.5 hours.