Opening the iTunes Store…If iTunes doesn’t open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening Apple Books.If Apple Books doesn't open, click the Books app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download from the iTunes Store, get iTunes now.

Already have iTunes? Click I have iTunes to open it now.

I Have iTunes Free Download

In the Line of Duty

Book 7, Detective Madison Knight Series

This book can be downloaded and read in Apple Books on your Mac or iOS device.


The loss of a hero cuts deep…

"Fans of crime fiction will be moved and enthralled by In the Line of Duty, as much an action-packed mystery as it is a heartfelt tribute to police who give up their lives to protect others." –Publishers Weekly

The headlines hit home for the Stiles PD when one of their own is shot and killed while on duty. Detective Madison Knight and the brotherhood of blue are fueled to find justice. But that's easier said than done. Emotions are high, and the evidence is pointing them in several directions.

One thing is certain: members of the Stiles PD will need to stand united and set aside their differences in order to reap justice. But can they hold it together and close the case without any more officers paying with their lives?

In the Line of Duty is "a roller-coaster ride of a plot with all manner of twists and turns." (Midwest Book Review) Perfect for fans of James Patterson, Michael Connelly, and JD Robb.

Buy this international bestselling book today and join the investigation! Uncover clues, follow leads, and catch a cop killer like thousands of readers have done before you. It doesn't matter if this is the first book you're reading in the Detective Madison Knight series or not; all the books stand alone!

What readers say about In the Line of Duty:

★★★★★ "A hard hitting, emotional novel." 
★★★★★ "A slew of twists and turns along the way."
★★★★★ "Arnold… makes us feel a roller coaster of emotions."
★★★★★ "I absolutely loved this book."
★★★★★ "I actually could see it being a movie."
★★★★★ "The author makes such an effort to do her research on police procedures."
★★★★★ "I was glad to read this book that has the utmost respect for law enforcement."
★★★★★ "Arnold puts words and feelings in this book that are true to life. Great writer and series."
★★★★★ "Thanks for such a good book. Maybe they can make a movie out of this one."
★★★★★ "Brilliant as usual."
★★★★★ "An insightful look into the lives and losses our country's heroes face every day on the front lines."
★★★★★ "This book absolutely kept me guessing until the killer was revealed."
★★★★★ "The twists and turns will leave your head spinning, in a good way."

Other Books in This Series

In the Line of Duty
View in iTunes
  • $7.99
  • Available on iPhone, iPad, iPod touch, and Mac.
  • Category: Police Procedural
  • Published: Sep 29, 2016
  • Publisher: Hibbert & Stiles Publishing Inc.
  • Seller: Draft2Digital, LLC
  • Print Length: 364 Pages
  • Language: English
  • Series: Book 7, Detective Madison Knight Series
  • Requirements: This book can only be viewed on an iOS device with Apple Books on iOS 12 or later, iBooks 1.3.1 or later and iOS 4.3.3 or later or a Mac with iBooks 1.0 or later and OS X 10.9 or later.

Customer Ratings

We have not received enough ratings to display an average for this book.