Books like The Sittaford Mystery
Agatha Christie
The Sittaford Mystery is 224 pages, about 4 hours 6 minutes at 250 words a minute.
12 books to read next
How long each takes
The Word Is Murder 7.3 h 
The Seven Deaths of Evelyn Hardcastle 9.2 h 
Killing Floor 9.2 h 
The Cuckoo's Calling 8.8 h 
End of Watch 8.1 h 
The Cruellest Month 8.5 h 
Dick Francis's Refusal 9.4 h 
A Wanted Man 8.2 h 
The Gods of Guilt 7.1 h 
Make Me 7.9 h 
Night School 8.7 h 
NYPD Red 7.3 h Bar height shows length. Estimated at 250 words a minute.