Books like Round the Red Lamp
Arthur Conan Doyle
Round the Red Lamp is 235 pages, about 4 hours 19 minutes at 250 words a minute.
12 books to read next
How long each takes
Of Human Bondage 10.8 h 
A Case of Need 6.1 h 
The Ghost Map 5.5 h 
Robert Ludlum's The Hades Factor 8.1 h 
The Greek Children's Doctor 3.5 h 
The Passage 16.6 h 
Barnaby Rudge 11.1 h 
Final Diagnosis, The 6.0 h 
Poor Things 5.8 h 
The Rebel Doctor's Bride 3.5 h 
A Room with a View 3.7 h 
Postmortem 6.7 h Bar height shows length. Estimated at 250 words a minute.