Books like Death of a Expert Witness
P. D. James
Death of a Expert Witness is 353 pages, about 6 hours 28 minutes at 250 words a minute.
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Last Bus to Woodstock 5.7 h 
Holy Disorders 4.7 h 
The Mysterious Mr Quin 4.8 h 
The Red House Mystery 3.9 h 
The Silent World of Nicholas Quinn 4.7 h 
Towards Zero 4.1 h Bar height shows length. Estimated at 250 words a minute.