Books like The Emperor's Code
Gordon Korman
The Emperor's Code is 196 pages, about 3 hours 36 minutes at 250 words a minute.
12 books to read next
How long each takes
Storm Warning 3.5 h 
Into the Gauntlet 5.7 h 
Day of Doom 5.0 h 
The Viper's Nest 3.2 h 
Beyond the Grave 3.5 h 
The Boxcar Children 2.8 h 
The Sword Thief 2.9 h 
A King's Ransom 3.5 h 
Trust No One 3.5 h 
Code of Honor 5.2 h 
The 39 Clues 3.8 h 
Alvin's Secret Code 2.9 h Bar height shows length. Estimated at 250 words a minute.