Books like Alex Rider, the Gadgets
Anthony Horowitz
Alex Rider, the Gadgets is 42 pages, about 46 minutes at 250 words a minute.
12 books to read next
How long each takes
Maximum Security 5.5 h 
Geronimo Stilton, Secret Agent 2.2 h 
Class A 5.6 h 
Man Vs. Beast 6.2 h 
Divine Madness 7.0 h 
Mad Dogs 7.6 h 
The Fall 6.5 h 
Spy School Goes South 6.5 h 
Escape 2.3 h 
Don't Judge a Girl by Her Cover (Gallagher Girls) 5.1 h 
The Recruit, The Graphic Novel 3.2 h 
Spy School 5.3 h Bar height shows length. Estimated at 250 words a minute.