Books like The Locked Room
Maj Sjöwall, Per Wahlöö
The Locked Room is 311 pages, about 5 hours 42 minutes at 250 words a minute.
12 books to read next
How long each takes
The Fifth Woman 9.5 h 
Sidetracked 8.0 h 
The Fire Witness 9.4 h 
The Ice Princess 7.2 h 
Firewall 9.7 h 
One Step Behind 9.9 h 
Moon Over Soho 6.7 h 
Maigret at the Crossroads 3.4 h 
Enter a Murderer 3.5 h 
The Dogs of Riga 6.2 h 
The Summer Book 3.1 h 
Death in Holy Orders 9.1 h Bar height shows length. Estimated at 250 words a minute.