Unknown Threat: Audiobook
Book 1 of the Defend and Protect series
According to The Books Insider's catalog data, the Unknown Threat audiobook runs 11 hours unabridged, narrated by Kate Forbes (about 7.3 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 11 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 11 hours, it runs longer than 75% of the 7,973 Religious Fiction audiobooks in our catalog.
Catching up on Defend and Protect
This is book 1. Books 1 to 3 run 33.4 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Unknown Threat | 11 hrs |
| 2 | Malicious Intent | 11.2 hrs |
| 3 | Under Fire | 11.3 hrs |
More narrated by Kate Forbes
Kate Forbes narrates 210 unabridged audiobooks in our catalog, 2,016 hours in all.
About as long, on the Religious Fiction shelf
1,816 Religious 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
Unknown Threat is book 1 of Lynn H. Blackburn's Defend and Protect series: a 11-hour unabridged recording, read by Kate Forbes, released March 2, 2021, on the Religious Fiction shelf.
The listen at a glance
- Length
- 11 hrs
- Narrated by
- Kate Forbes
- Released
- March 2, 2021
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Religious Fiction
- Series
- Defend and Protect #1
- ISBN
- 9781705015797
How to listen to Unknown Threat 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 Unknown Threat audiobook?
Unknown Threat runs 11 hours unabridged. At 1.5× speed that drops to roughly 7.3 hours.
Is the Unknown Threat audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Unknown Threat?
Unknown Threat is narrated by Kate Forbes.
Is Unknown Threat worth listening to at 1.5× speed?
At 1.5× you'd finish in about 7.3 hours, saving 3.7 hours.