Mysteries According to Humphrey: Audiobook
Book 8 of the Humphrey series
According to The Books Insider's catalog data, the Mysteries According to Humphrey audiobook runs 3.5 hours unabridged, narrated by William Dufris (about 2.3 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 3.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 7 days |
| 1 hour / day | 4 days |
| 2 hours / day | 2 days |
| 1 hour / day at 1.5× | 3 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 3.5 hours, it is shorter than 62% of the 7,923 Mystery & Fantasy audiobooks in our catalog.
Catching up on Humphrey
This is book 8. Books 1 to 7 run 22.8 hours before it; books 1 to 13 run 42.7 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | The World According to Humphrey | 2.6 hrs |
| 2 | Friendship According to Humphrey | 3.2 hrs |
| 3 | Trouble According to Humphrey | 3.4 hrs |
| 4 | Surprises According to Humphrey | 3 hrs |
| 5 | Adventure According to Humphrey | 3 hrs |
| 6 | Summer According to Humphrey | 4 hrs |
| 7 | School Days According to Humphrey | 3.8 hrs |
| 8 | Mysteries According to Humphrey | 3.5 hrs |
| 9 | Winter According to Humphrey | 3.6 hrs |
| 10 | Secrets According to Humphrey | 3.1 hrs |
| 11 | Imagination According to Humphrey | 3 hrs |
| 12 | Spring According to Humphrey | 3.7 hrs |
More narrated by William Dufris
William Dufris narrates 321 unabridged audiobooks in our catalog, 3,110 hours in all.
About as long, on the Mystery & Fantasy shelf
417 Mystery & Fantasy 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
Mysteries According to Humphrey is book 8 of Betty G. Birney's Humphrey series: a 3.5-hour unabridged recording, read by William Dufris, released January 20, 2015, on the Mystery & Fantasy and Animals & Nature (Kids) shelves.
The listen at a glance
- Length
- 3.5 hrs
- Narrated by
- William Dufris
- Released
- January 20, 2015
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Mystery & Fantasy, Animals & Nature (Kids)
- Series
- Humphrey #8
- ISBN
- 9780553556407
How to listen to Mysteries According to Humphrey 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 Mysteries According to Humphrey audiobook?
Mysteries According to Humphrey runs 3.5 hours unabridged. At 1.5× speed that drops to roughly 2.3 hours.
Is the Mysteries According to Humphrey audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Mysteries According to Humphrey?
Mysteries According to Humphrey is narrated by William Dufris.