The Viscount Always Knocks Twice: Audiobook
Book 4 of the Heart of Enquiry series
According to The Books Insider's catalog data, The Viscount Always Knocks Twice runs 11.4 hours as an unabridged audiobook, narrated by Marian Hussey (about 7.6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 11.4 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 23 days |
| 1 hour / day | 12 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 11.4 hours, it runs longer than 78% of the 9,636 Historical (Romance) audiobooks in our catalog.
Catching up on Heart of Enquiry
This is book 4. Books 1 to 3 run 27.8 hours before it; books 1 to 6 run 62.2 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | The Duke Who Knew Too Much | 10.3 hrs |
| 2 | M is for Marquess | 10.7 hrs |
| 3 | The Lady Who Came in from the Cold | 6.8 hrs |
| 4 | The Viscount Always Knocks Twice | 11.4 hrs |
| 5 | Never Say Never to an Earl | 11.1 hrs |
| 6 | The Gentleman Who Loved Me | 11.8 hrs |
More narrated by Marian Hussey
Marian Hussey narrates 244 unabridged audiobooks in our catalog, 2,427 hours in all.
About as long, on the Historical (Romance) shelf
2,115 Historical (Romance) 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 Viscount Always Knocks Twice is book 4 of Grace Callaway's Heart of Enquiry series: a 11.4-hour unabridged recording, read by Marian Hussey, released May 18, 2020, on the Historical (Romance) shelf.
The listen at a glance
- Length
- 11.4 hrs
- Narrated by
- Marian Hussey
- Released
- May 18, 2020
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Historical (Romance)
- Series
- Heart of Enquiry #4
- ISBN
- 9781939537485
How to listen to The Viscount Always Knocks Twice 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 Viscount Always Knocks Twice as an audiobook?
The Viscount Always Knocks Twice runs 11.4 hours unabridged. At 1.5× speed that drops to roughly 7.6 hours.
Is The Viscount Always Knocks Twice free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Viscount Always Knocks Twice?
The Viscount Always Knocks Twice is narrated by Marian Hussey.
Is The Viscount Always Knocks Twice worth listening to at 1.5× speed?
At 1.5× you'd finish in about 7.6 hours, saving 3.8 hours.