Gray Matter: Audiobook
Book 2 of the Thomas Prescott series
According to The Books Insider's catalog data, the Gray Matter audiobook runs 9.1 hours unabridged, narrated by Johnny Heller (about 6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 9.1 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 19 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 9.1 hours, it runs longer than 52% of the 13,042 Suspense audiobooks in our catalog.
Catching up on The Thomas Prescott Series
This is book 2. Book 1 runs 7.1 hours before it; books 1 to 6 run 53.8 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Unforeseen | 7.1 hrs |
| 2 | Gray Matter | 9.1 hrs |
| 3 | The Afrikaans | 9.2 hrs |
| 4 | Show Me | 8.7 hrs |
| 5 | Jungle Up | 10.1 hrs |
| 6 | The Numbers | 9.5 hrs |
More narrated by Johnny Heller
Johnny Heller narrates 569 unabridged audiobooks in our catalog, 3,574 hours in all.
About as long, on the Suspense shelf
3,051 Suspense 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
Gray Matter is book 2 of Nick Pirog's Thomas Prescott series: a 9.1-hour unabridged recording, read by Johnny Heller, released May 28, 2019, on the Suspense shelf.
The listen at a glance
- Length
- 9.1 hrs
- Narrated by
- Johnny Heller
- Released
- May 28, 2019
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Suspense
- Series
- The Thomas Prescott Series #2
- ISBN
- 9781982670689
How to listen to Gray Matter 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 Gray Matter audiobook?
Gray Matter runs 9.1 hours unabridged. At 1.5× speed that drops to roughly 6 hours.
Is the Gray Matter audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Gray Matter?
Gray Matter is narrated by Johnny Heller.