Books like The Story Of Martha
David Roden, Dan Abnett
The Story Of Martha is 256 pages, about 4 hours 42 minutes at 250 words a minute.
12 books to read next
How long each takes
The Clockwise Man 4.7 h 
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Behold the Man 2.6 h Doctor Who 5.6 h 
Doctor Who 4.7 h 
Doctor Who 4.7 h 
The Time Traveller's Almanac 17.6 h 
The Time Ships 9.1 h 
The Light of Other Days 5.8 h 
Novels 5.9 h Bar height shows length. Estimated at 250 words a minute.