The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism: Audiobook
According to The Books Insider's catalog data, The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism runs 15.2 hours as an unabridged audiobook, narrated by Norman Dietz (about 10.1 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 15.2 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 31 days |
| 1 hour / day | 16 days |
| 2 hours / day | 8 days |
| 1 hour / day at 1.5× | 11 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 15.2 hours, it runs longer than 83% of the 5,887 The Americas audiobooks in our catalog.
More narrated by Norman Dietz
Norman Dietz narrates 137 unabridged audiobooks in our catalog, 1,621 hours in all.
About as long, on the The Americas shelf
572 The Americas audiobooks in our catalog run within 10% of this length. The most popular on the store:
- The Devil in the White City: Murder, Magic, and Madness at the Fair That Changed America
- The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics
- In Cold Blood
- Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, the Most Powerful Indian Tribe in American History
- Midnight in the Garden of Good and Evil
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 Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism is an audiobook by Robert Koenig: a 15.2-hour unabridged recording, read by Norman Dietz, released January 15, 2007, on the The Americas and Military (History) shelves.
The listen at a glance
- Length
- 15.2 hrs
- Narrated by
- Norman Dietz
- Released
- January 15, 2007
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- The Americas, Military (History)
- ISBN
- 9781400173501
How to listen to The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism 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 Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism as an audiobook?
The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism runs 15.2 hours unabridged. At 1.5× speed that drops to roughly 10.1 hours.
Is The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism?
The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism is narrated by Norman Dietz.
Is The Fourth Horseman: The Tragedy of Anton Dilger and the Birth of Biological Terrorism worth listening to at 1.5× speed?
At 1.5× you'd finish in about 10.1 hours, saving 5.1 hours.