Arnaldur Indriðason books in order
4 books in the catalogue, about 21 hours of reading in all; the shortest takes 4 hours and the longest 6 hours.
1 series and 1 standalone book in the catalogue.
Detective Erlendur series
7 books 3 Jar City 5.1 h 
Voices 5.6 h 
Arctic Chill 6.3 h 8 
Hypothermia 6.7 h 9 
Outrage 5.6 h
4 Silence of the Grave length not known
5 Voices 5.6 h 6 The Draining Lake length not known
7 Arctic Chill 6.3 h 8 Hypothermia 6.7 h 9 Outrage 5.6 h 