Books like The Mars Mystery
Graham Hancock
The Mars Mystery is 356 pages, about 6 hours 32 minutes at 250 words a minute.
8 books to read next
How long each takes
Blue Mars 14.4 h 
The Book of the Damned 5.8 h 
The Case for Mars 6.4 h 
Erinnerungen an Die Zukunft 3.7 h 
Glimpses of Other Realities 6.7 h 
The Wars of Gods and Men 6.9 h 
Signs of the Gods? 4.6 h 
Mars Life 8.2 h Bar height shows length. Estimated at 250 words a minute.