The Inventor: Audiobook
Book 4 of the Penny Green series
According to The Books Insider's catalog data, The Inventor runs 9 hours as an unabridged audiobook, narrated by Gabrielle Baker (about 6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 9 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 18 days |
| 1 hour / day | 9 days |
| 2 hours / day | 5 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 9 hours, it runs longer than 57% of the 22,296 Police & Detective audiobooks in our catalog.
Catching up on Penny Green
This is book 4. Books 1 to 3 run 26.1 hours before it; books 1 to 12 run 108.6 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Limelight | 9 hrs |
| 2 | The Rookery | 8 hrs |
| 3 | The Maid's Secret | 9.1 hrs |
| 4 | The Inventor | 9 hrs |
| 5 | Curse of the Poppy | 10 hrs |
| 6 | The Bermondsey Poisoner | 8.9 hrs |
| 7 | An Unwelcome Guest | 10.6 hrs |
| 8 | Death at the Workhouse | 9.1 hrs |
| 9 | The Gang of St Bride's | 9.6 hrs |
| 10 | Murder in Ratcliffe | 9.5 hrs |
| 11 | The Egyptian Mystery | 8.2 hrs |
| 12 | The Camden Spiritualist | 7.7 hrs |
More narrated by Gabrielle Baker
Gabrielle Baker narrates 148 unabridged audiobooks in our catalog, 1,598 hours in all.
About as long, on the Police & Detective shelf
6,044 Police & Detective 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
The Inventor is book 4 of Emily Organ's Penny Green series: a 9-hour unabridged recording, read by Gabrielle Baker, released January 29, 2019, on the Police & Detective shelf.
The listen at a glance
- Length
- 9 hrs
- Narrated by
- Gabrielle Baker
- Released
- January 29, 2019
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Police & Detective
- Series
- Penny Green #4
- ISBN
- 9781541443945
How to listen to The Inventor 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 Inventor as an audiobook?
The Inventor runs 9 hours unabridged. At 1.5× speed that drops to roughly 6 hours.
Is The Inventor free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Inventor?
The Inventor is narrated by Gabrielle Baker.