Books like Agent to the Stars
John Scalzi
Agent to the Stars is 346 pages, about 6 hours 21 minutes at 250 words a minute.
12 books to read next
How long each takes
A Desolation Called Peace 9.1 h 
Dreamcatcher 13.5 h 
Footfall 9.8 h 
The Voyage of the Space Beagle 3.7 h 
Contact 7.9 h 
Downward to the Earth 3.5 h 
Planet of the Damned 3.1 h 
Death's End 13.3 h 
Children of Time 11.3 h 
Foundation 4.4 h 
A Darkling Sea 6.5 h 
Our Friends from Frolix Eight 4.0 h Bar height shows length. Estimated at 250 words a minute.