The Case of the Mad Doctor: Audiobook
Book 1 of the Ollenu and Ashby Investigations series
According to The Books Insider's catalog data, The Case of the Mad Doctor runs 9.4 hours as an unabridged audiobook, narrated by Jumaane Brown (about 6.2 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 9.4 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 9.4 hours, it is shorter than 64% of the 13,430 Historical (Fiction) audiobooks in our catalog.
About as long, on the Historical (Fiction) shelf
2,906 Historical (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
The Case of the Mad Doctor is book 1 of P.D. Lennon's Ollenu and Ashby Investigations series: a 9.4-hour unabridged recording, read by Jumaane Brown, released July 14, 2026, on the Historical (Fiction) and BIPOC Stories & Voices shelves.
The listen at a glance
- Length
- 9.4 hrs
- Narrated by
- Jumaane Brown
- Released
- July 14, 2026
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Historical (Fiction), BIPOC Stories & Voices
- Series
- The Ollenu and Ashby Investigations #1
- ISBN
- 9798217269556
How to listen to The Case of the Mad Doctor 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 Case of the Mad Doctor as an audiobook?
The Case of the Mad Doctor runs 9.4 hours unabridged. At 1.5× speed that drops to roughly 6.2 hours.
Is The Case of the Mad Doctor free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Case of the Mad Doctor?
The Case of the Mad Doctor is narrated by Jumaane Brown.