Books like Lethal Agent
Vince Flynn, Kyle Mills
Lethal Agent is 384 pages, about 7 hours 2 minutes at 250 words a minute.
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The Survivor 7.3 h 
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End Game 7.9 h 
Robert Ludlum's The Bourne Sanction 10.3 h 
Tom Clancy's Splinter Cell 6.8 h 
The Messenger 6.5 h 
Hidden Order 7.0 h 
Moscow Rules 7.9 h 
Rainbow Six 16.5 h 
Patient Zero 7.7 h 
Act of War 6.6 h Bar height shows length. Estimated at 250 words a minute.