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Department Q Books in Order.

Quick Answer

Start with The Keeper of Lost Causes (2011), published in the UK as Mercy. Each case is solved within its own book, but the team's personal storylines build, so reading in order works best.

The complete reading order for the Department Q series by Jussi Adler-Olsen. Below you'll find the authoritative guide on how to read the books in order, including publication dates and chronological timeline placements.

Where to start

Start with The Keeper of Lost Causes (2011), published in the UK as Mercy. Each case is solved within its own book, but the team's personal storylines build, so reading in order works best.

  • •Titles are the US editions; the UK editions of the first books were retitled (Mercy, Disgrace, Redemption, Guilt, Buried). Years are the first English-language publication, not the Danish original.
  • •The books were first published in Danish as Kvinden i buret (2007), Fasandræberne (2008), Flaskepost fra P (2009) and so on.

Complete Series Reading Order

Publication Reading Order11 Titles

Why Publication Order?We recommend reading in Publication Order (default). This follows the author's release schedule, ensuring you experience plot twists, character growth, and world-building exactly as intended without spoilers.
Best Start Here
1

The Keeper of Lost Causes

Pub: 2011
2

The Absent One

Pub: 2012

Plot details hidden until you finish "The Keeper of Lost Causes".

3

A Conspiracy of Faith

Pub: 2013

Plot details hidden until you finish "The Absent One".

4

The Purity of Vengeance

Pub: 2013

Plot details hidden until you finish "A Conspiracy of Faith".

5

The Marco Effect

Pub: 2014

Plot details hidden until you finish "The Purity of Vengeance".

6

The Hanging Girl

Pub: 2015

Plot details hidden until you finish "The Marco Effect".

7

The Scarred Woman

Pub: 2017

Plot details hidden until you finish "The Hanging Girl".

8

Victim 2117

Pub: 2020

Plot details hidden until you finish "The Scarred Woman".

9

The Shadow Murders

Pub: 2022

Plot details hidden until you finish "Victim 2117".

10

Locked In

Pub: 2024

Plot details hidden until you finish "The Shadow Murders".

11

No Song for the Dead

Pub: 2026

Plot details hidden until you finish "Locked In".

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Frequently Asked Questions

What order should I read Department Q in?

Start with The Keeper of Lost Causes (2011), published in the UK as Mercy. Each case is solved within its own book, but the team's personal storylines build, so reading in order works best.

How many books are in Department Q?

11 main books, published 2011–2026.

Can I read Department Q out of order?

It's best not to. The books build on each other, so reading out of order spoils earlier twists.

Has Department Q been adapted for TV or film?

Adapted for the screen as the Danish films starting with Kvinden i buret (2013), and as the Netflix series Dept. Q.