Semper Human: Book Three of the Inheritance Trilogy: Audiobook
According to The Books Insider's catalog data, the Semper Human: Book Three of the Inheritance Trilogy audiobook runs 13 hours unabridged, narrated by William Dufris (about 8.6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 13 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 26 days |
| 1 hour / day | 13 days |
| 2 hours / day | 7 days |
| 1 hour / day at 1.5× | 9 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 13 hours, it runs longer than 80% of the 13,269 Science Fiction audiobooks in our catalog.
More narrated by William Dufris
William Dufris narrates 321 unabridged audiobooks in our catalog, 3,110 hours in all.
About as long, on the Science Fiction shelf
1,652 Science 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
Semper Human: Book Three of the Inheritance Trilogy is an audiobook by Ian Douglas: a 13-hour unabridged recording, read by William Dufris, released September 2, 2011, on the Science Fiction shelf.
The listen at a glance
- Length
- 13 hrs
- Narrated by
- William Dufris
- Released
- September 2, 2011
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Science Fiction
- ISBN
- 9780062131904
How to listen to Semper Human: Book Three of the Inheritance Trilogy 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 Semper Human: Book Three of the Inheritance Trilogy audiobook?
Semper Human: Book Three of the Inheritance Trilogy runs 13 hours unabridged. At 1.5× speed that drops to roughly 8.6 hours.
Is the Semper Human: Book Three of the Inheritance Trilogy audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Semper Human: Book Three of the Inheritance Trilogy?
Semper Human: Book Three of the Inheritance Trilogy is narrated by William Dufris.
Is Semper Human: Book Three of the Inheritance Trilogy worth listening to at 1.5× speed?
At 1.5× you'd finish in about 8.6 hours, saving 4.3 hours.