Books like A Promise of Thunder
Connie Mason
A Promise of Thunder is 444 pages, about 8 hours 8 minutes at 250 words a minute.
12 books to read next
How long each takes
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Silver Lining 6.6 h 
Silken Savage 8.7 h 
The Darkest Heart 7.9 h 
My Wicked Enchantress 6.5 h 
Cheyenne Captive 9.1 h 
Love, Cherish Me 10.6 h Bar height shows length. Estimated at 250 words a minute.