The Books Insiderindependent audiobook data
The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) by Roland Smith

The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4): Audiobook

Book 4 of the 39 Clues: Cahills vs. Vespers series

According to The Books Insider's catalog data, The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) runs 4.4 hours as an unabridged audiobook, narrated by David Pittu (about 2.9 hours at 1.5× playback speed).

4.4listening hrs
Mystery & Fantasystore shelf
2012released
Free for new listeners

The instrument When will you finish it?

Based on 4.4 hours of listening.

Days to finish The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) at common listening paces
Your paceYou'll finish in
30 min / day9 days
1 hour / day5 days
2 hours / day3 days
1 hour / day at 1.5×3 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 4.4 hours, it is shorter than 55% of the 7,923 Mystery & Fantasy audiobooks in our catalog.

About as long, on the Mystery & Fantasy shelf

553 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

The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) is book 4 of Roland Smith's 39 Clues: Cahills vs. Vespers series: a 4.4-hour unabridged recording, read by David Pittu, released September 4, 2012, on the Mystery & Fantasy shelf.

The listen at a glance

Length
4.4 hrs
Narrated by
David Pittu
Released
September 4, 2012
Format
Unabridged audiobook
Language
English
Store shelves
Mystery & Fantasy
Series
39 Clues: Cahills vs. Vespers #4
ISBN
9780545434331

How to listen to The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) free

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Questions listeners ask

How long is The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) as an audiobook?

The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) runs 4.4 hours unabridged. At 1.5× speed that drops to roughly 2.9 hours.

Is The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) free as an audiobook?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4)?

The Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4) is narrated by David Pittu.