Books like The Death of Mrs Westaway
Ruth Ware
The Death of Mrs Westaway is 400 pages, about 7 hours 20 minutes at 250 words a minute.
12 books to read next
How long each takes
The Whisper Man 7.3 h 
The Silent Patient 6.5 h 
His & Hers 6.4 h 
Uncle Silas 8.8 h 
Under the Dome 19.7 h 
Dark Matter 6.7 h 
The Girl Who Loved Tom Gordon 4.7 h 
I'm Thinking of Ending Things 4.1 h 
Intensity 7.0 h 
The Woman in the Window: A Novel 8.4 h 
Behind Her Eyes 5.9 h 
Therapy 5.6 h Bar height shows length. Estimated at 250 words a minute.