The Books Insiderindependent audiobook data
Betrayal of Mercia by MJ Porter

Betrayal of Mercia: Audiobook

Book 7 of the Eagle of Mercia Chronicles series

According to The Books Insider's catalog data, the Betrayal of Mercia audiobook runs 9.6 hours unabridged, narrated by Sean Barrett (about 6.4 hours at 1.5× playback speed).

9.6listening hrs
Action & Adventure (Fiction)store shelf
2025released
Free for new listeners

The instrument When will you finish it?

Based on 9.6 hours of listening.

Days to finish Betrayal of Mercia at common listening paces
Your paceYou'll finish in
30 min / day20 days
1 hour / day10 days
2 hours / day5 days
1 hour / day at 1.5×7 days

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

What our data says

  • At 9.6 hours, it runs longer than 58% of the 6,730 Action & Adventure (Fiction) audiobooks in our catalog.

About as long, on the Action & Adventure (Fiction) shelf

1,185 Action & Adventure (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

Betrayal of Mercia is book 7 of MJ Porter's Eagle of Mercia Chronicles series: a 9.6-hour unabridged recording, read by Sean Barrett, released January 5, 2025, on the Action & Adventure (Fiction) and Westerns & War shelves.

The listen at a glance

Length
9.6 hrs
Narrated by
Sean Barrett
Released
January 5, 2025
Format
Unabridged audiobook
Language
English
Store shelves
Action & Adventure (Fiction), Westerns & War
Series
The Eagle of Mercia Chronicles #7
ISBN
9781836174837

How to listen to Betrayal of Mercia free

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Questions listeners ask

How long is the Betrayal of Mercia audiobook?

Betrayal of Mercia runs 9.6 hours unabridged. At 1.5× speed that drops to roughly 6.4 hours.

Is the Betrayal of Mercia audiobook free?

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

Who narrates Betrayal of Mercia?

Betrayal of Mercia is narrated by Sean Barrett.