Most times these books are only free for a day or two, so you have to grab them while you can. Worry about whether you really want to read it later if it seems interesting. And be careful, they can change from free to not free at any time. I have also decided to list books for no more than 3 days in a row to avoid cluttering up the posts, unless there is some reason I think the book deserves extra attention.
From the top 100 free list
THE GREATEST MYSTERY OF MANKIND...
The Piri Reis map. The most enigmatic artifact in existence. Drawn by an Ottoman Admiral in 1513 and taken from much more ancient maps, it displays sections of Antarctica that could only have been visible from the air before the great ice age nearly 6000 years ago.
Explorer and treasure hunter Dillon Mentzer believes the information in the map was discovered by an advanced civilization now lost to history. When word reaches him that an expedition is being mounted by a man claiming to have discovered a lost city, Dillon takes the chance and joins with him.
THE MOST POWERFUL WEAPON OF THE ANCIENT WORLD...
What Dillon finds is a civilization more advanced than our own with a terrible secret: a weapon that has remained hidden for sixty centuries. When the weapon, dubbed "Black Onyx," is exposed, Dillon decides it's too powerful to leave and takes it back with him.
AN EVIL THAT WILL STOP AT NOTHING...
When the Black Onyx is revealed, El Sacerdote, the most powerful man in the Juarez cartel, learns of its power. He will destroy anyone and everything to get it. He kidnaps those closest to Dillon who reveal to him that there is not one, but multiple Black Onyx suits. El Sacerdote travels to the Antarctic to retrieve a weapon that will allow him to butcher any who oppose him.
With the fate of the world in his hands, Dillon must choose whether the fight is worth it. But something he could never have imagined awaits him...an entity more powerful than even the Black Onyx.
A short novel.
[#16. Kind of comic bookish.]