The Books Insiderindependent audiobook data
On, Off by Colleen McCullough

On, Off: Audiobook

Book 1 of the Carmine Delmonico Novels series

According to The Books Insider's catalog data, the On, Off audiobook runs 12.7 hours unabridged, narrated by Lewis Grenville (about 8.5 hours at 1.5× playback speed).

12.7listening hrs
Police & Detectivestore shelf
2008released
Free for new listeners

The instrument When will you finish it?

Based on 12.7 hours of listening.

Days to finish On, Off at common listening paces
Your paceYou'll finish in
30 min / day26 days
1 hour / day13 days
2 hours / day7 days
1 hour / day at 1.5×9 days

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

What our data says

  • At 12.7 hours, it runs longer than 92% of the 22,296 Police & Detective audiobooks in our catalog.

About as long, on the Police & Detective shelf

2,196 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

On, Off is book 1 of Colleen McCullough's Carmine Delmonico Novels series: a 12.7-hour unabridged recording, read by Lewis Grenville, released November 15, 2008, on the Police & Detective and Psychological shelves.

The listen at a glance

Length
12.7 hrs
Narrated by
Lewis Grenville
Released
November 15, 2008
Format
Unabridged audiobook
Language
English
Store shelves
Police & Detective, Psychological
Series
The Carmine Delmonico Novels #1
ISBN
9781602832008

How to listen to On, Off 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.

Start listening free

Questions listeners ask

How long is the On, Off audiobook?

On, Off runs 12.7 hours unabridged. At 1.5× speed that drops to roughly 8.5 hours.

Is the On, Off audiobook free?

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

Who narrates On, Off?

On, Off is narrated by Lewis Grenville.

Is On, Off worth listening to at 1.5× speed?

At 1.5× you'd finish in about 8.5 hours, saving 4.2 hours.