The Books Insiderindependent audiobook data
The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. by James Harvey

The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London.: Audiobook

According to The Books Insider's catalog data, The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. runs 3.5 hours as an unabridged audiobook, narrated by James Harvey (about 2.3 hours at 1.5× playback speed).

3.5listening hrs
Police & Detectivestore shelf
2026released
Free for new listeners

The instrument When will you finish it?

Based on 3.5 hours of listening.

Days to finish The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. at common listening paces
Your paceYou'll finish in
30 min / day7 days
1 hour / day4 days
2 hours / day2 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 3.5 hours, it is shorter than 93% of the 22,296 Police & Detective audiobooks in our catalog.

About as long, on the Police & Detective shelf

245 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 Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. is an audiobook by James Harvey: a 3.5-hour unabridged recording, read by James Harvey, released March 25, 2026, on the Police & Detective shelf.

The listen at a glance

Length
3.5 hrs
Narrated by
James Harvey
Released
March 25, 2026
Format
Unabridged audiobook
Language
English
Store shelves
Police & Detective
ISBN
9780466713904

How to listen to The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. 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.

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Questions listeners ask

How long is The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. as an audiobook?

The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. runs 3.5 hours unabridged. At 1.5× speed that drops to roughly 2.3 hours.

Is The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. free as an audiobook?

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

Who narrates The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London.?

The Sign of the Four: A locked-room murder, a missing Indian treasure, and a cryptic message that challenges the greatest analytical mind in London. is narrated by James Harvey.