The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series: Audiobook
Book 4 of the Hildur series
According to The Books Insider's catalog data, The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series runs 9.6 hours as an unabridged audiobook, narrated by Colleen Prendergast (about 6.4 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 9.6 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 20 days |
| 1 hour / day | 10 days |
| 2 hours / day | 5 days |
| 1 hour / day at 1.5× | 7 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 9.6 hours, it runs longer than 66% of the 22,296 Police & Detective audiobooks in our catalog.
Catching up on Hildur
This is book 4. Books 1 to 3 run 31.7 hours before it; books 1 to 4 run 41.3 hours in all.
More narrated by Colleen Prendergast
Colleen Prendergast narrates 146 unabridged audiobooks in our catalog, 1,395 hours in all.
About as long, on the Police & Detective shelf
5,864 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 Secrets from the Deep: The new thriller in the million-copy selling, award-winning series is book 4 of Satu Rämö's Hildur series: a 9.6-hour unabridged recording, read by Colleen Prendergast, released May 28, 2026, on the Police & Detective shelf.
The listen at a glance
- Length
- 9.6 hrs
- Narrated by
- Colleen Prendergast
- Released
- May 28, 2026
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Police & Detective
- Series
- Hildur #4
- ISBN
- 9781806172733
How to listen to The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series 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 Secrets from the Deep: The new thriller in the million-copy selling, award-winning series as an audiobook?
The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series runs 9.6 hours unabridged. At 1.5× speed that drops to roughly 6.4 hours.
Is The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series?
The Secrets from the Deep: The new thriller in the million-copy selling, award-winning series is narrated by Colleen Prendergast.