Jussi Adler-Olsen is a Danish author of Scandinavian crime fiction. He is best known in English-speaking countries for his Department Q series. His novels have been sold in 36 countries around in the world, including the United States, United Kingdom, Sweden, Spain, Russia, The Netherlands, Japan, Germany and China. He was the most popular author in Germany in the year 2011, despite not being German.

Jussi Adler-Olsen became a published author in 1985 with a non-fiction book on Groucho Marx. His first foray into fiction was Alfabethuset (The Alphabet House) in 1997. His first novel to be published in English was Mercy (UK)/The Keeper of Lost Causes (US). Below is a list of Jussi Adler-Olsen’s books in order of when they were originally released:

Publication Order of Department Q Books


The Keeper of Lost Causes(2011) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Absent One(2012) Best Hardcover PriceBest Paperback PriceBest Kindle Price
A Conspiracy of Faith(2013) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Purity of Vengeance(2013) Best Hardcover PriceBest Paperback PriceBest Kindle Price

Notes: Mercy was also published as The Keeper of Lost Causes. Disgrace is also known as The Absent One. A Conspiracy of Faith was published as Redemption in the UK. The Purity of Vengeance is also known as Contempt in the UK.

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