What They Don't Know: Audiobook
According to The Books Insider's catalog data, the What They Don't Know audiobook runs 7.8 hours unabridged, narrated by Hallie Ricardo and Stephanie Willis (about 5.2 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 7.8 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 16 days |
| 1 hour / day | 8 days |
| 2 hours / day | 4 days |
| 1 hour / day at 1.5× | 6 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 7.8 hours, it is shorter than 55% of the 4,472 Tough Topics audiobooks in our catalog.
More narrated by Hallie Ricardo
Hallie Ricardo narrates 50 unabridged audiobooks in our catalog, 361 hours in all.
About as long, on the Tough Topics shelf
930 Tough Topics 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
What They Don't Know is an audiobook by Nicole Maggi: a 7.8-hour unabridged recording, read by Hallie Ricardo and Stephanie Willis, released June 11, 2019, on the Tough Topics shelf.
The listen at a glance
- Length
- 7.8 hrs
- Narrated by
- Hallie Ricardo, Stephanie Willis
- Released
- June 11, 2019
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Tough Topics
- ISBN
- 9781721343546
How to listen to What They Don't Know 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 What They Don't Know audiobook?
What They Don't Know runs 7.8 hours unabridged. At 1.5× speed that drops to roughly 5.2 hours.
Is the What They Don't Know audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates What They Don't Know?
What They Don't Know is narrated by Hallie Ricardo and Stephanie Willis.