The Books Insiderindependent audiobook data
One Dark Spark by Heather Hildenbrand

One Dark Spark: Audiobook

Book 1 of the Accidental Alchemy series

According to The Books Insider's catalog data, the One Dark Spark audiobook runs 7.2 hours unabridged, narrated by Savannah Rivers and Aiden Snow (about 4.8 hours at 1.5× playback speed).

7.2listening hrs
Romantasy (Romance)store shelf
2026released
Free for new listeners

The instrument When will you finish it?

Based on 7.2 hours of listening.

Days to finish One Dark Spark at common listening paces
Your paceYou'll finish in
30 min / day15 days
1 hour / day8 days
2 hours / day4 days
1 hour / day at 1.5×5 days

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

What our data says

  • At 7.2 hours, it is shorter than 67% of the 7,781 Romantasy (Romance) audiobooks in our catalog.

Catching up on Accidental Alchemy

This is book 1. Books 1 to 3 run 20 hours in all.

BookTitleLength
1One Dark Spark7.2 hrs
2Two Blazing Hearts5.9 hrs
3Three Scorched Kingdoms6.8 hrs

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

One Dark Spark is book 1 of Heather Hildenbrand's Accidental Alchemy series: a 7.2-hour unabridged recording, read by Savannah Rivers and Aiden Snow, released May 4, 2026, on the Romantasy (Romance) and Romantasy (Science Fiction & Fantasy) shelves.

The listen at a glance

Length
7.2 hrs
Narrated by
Savannah Rivers, Aiden Snow
Released
May 4, 2026
Format
Unabridged audiobook
Language
English
Store shelves
Romantasy (Romance), Romantasy (Science Fiction & Fantasy)
Series
Accidental Alchemy #1
ISBN
9798331955809

How to listen to One Dark Spark free

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Questions listeners ask

How long is the One Dark Spark audiobook?

One Dark Spark runs 7.2 hours unabridged. At 1.5× speed that drops to roughly 4.8 hours.

Is the One Dark Spark audiobook free?

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

Who narrates One Dark Spark?

One Dark Spark is narrated by Savannah Rivers and Aiden Snow.