Books like The Lord of Opium
Nancy Farmer
The Lord of Opium is 432 pages, about 7 hours 55 minutes at 250 words a minute.
12 books to read next
How long each takes
The Kill Order 7.0 h 
Life As We Knew It 6.5 h 
The Fever Code 7.0 h 
Payback 5.8 h 
Masterminds 6.2 h 
Where Late the Sweet Birds Sang 4.6 h 
We All Looked Up 7.2 h 
The Neptune Project 6.3 h 
Ashfall 8.7 h 
Anna to the Infinite Power 3.7 h 
The Dead & the Gone 5.9 h 
Amy, Number Seven 3.8 h Bar height shows length. Estimated at 250 words a minute.