The Books Insiderindependent audiobook data
Spark and Tether by Lilian Zenzi

Spark and Tether: Audiobook

Book 1 of the Synchronists series

According to The Books Insider's catalog data, the Spark and Tether audiobook runs 14.4 hours unabridged, narrated by Josiah Sweetnam (about 9.6 hours at 1.5× playback speed).

14.4listening hrs
Science Fictionstore shelf
2025released
Free for new listeners

The instrument When will you finish it?

Based on 14.4 hours of listening.

Days to finish Spark and Tether at common listening paces
Your paceYou'll finish in
30 min / day29 days
1 hour / day15 days
2 hours / day8 days
1 hour / day at 1.5×10 days

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

What our data says

  • At 14.4 hours, it runs longer than 86% of the 13,269 Science Fiction audiobooks in our catalog.

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

Spark and Tether is book 1 of Lilian Zenzi's Synchronists series: a 14.4-hour unabridged recording, read by Josiah Sweetnam, released May 20, 2025, on the LGBTQ+ (Romance) and Science Fiction shelves.

The listen at a glance

Length
14.4 hrs
Narrated by
Josiah Sweetnam
Released
May 20, 2025
Format
Unabridged audiobook
Language
English
Store shelves
LGBTQ+ (Romance), Science Fiction
Series
Synchronists #1
ISBN
9781961474031

How to listen to Spark and Tether free

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Questions listeners ask

How long is the Spark and Tether audiobook?

Spark and Tether runs 14.4 hours unabridged. At 1.5× speed that drops to roughly 9.6 hours.

Is the Spark and Tether audiobook free?

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

Who narrates Spark and Tether?

Spark and Tether is narrated by Josiah Sweetnam.

Is Spark and Tether worth listening to at 1.5× speed?

At 1.5× you'd finish in about 9.6 hours, saving 4.8 hours.