Books like Unnatural Death
Dorothy L. Sayers
Unnatural Death is 286 pages, about 5 hours 15 minutes at 250 words a minute.
12 books to read next
How long each takes
The Big Four 4.1 h 
The Valley of Fear 3.8 h 
The Sittaford Mystery 4.1 h 
After the Funeral 4.5 h 
Dancers in Mourning 5.4 h 
The Clocks 4.7 h 
Mrs. McGinty's Dead 4.3 h 
The Labours of Hercules 4.9 h 
The Pale Horse 4.7 h 
Murder on the Links 4.1 h 
Poirot's Early Cases 4.7 h 
Dead Cert 4.5 h Bar height shows length. Estimated at 250 words a minute.