James S.A. Corey 
Expanse [PDF ebook] 

Based on the bestselling books and tying into the hit television series, THE EXPANSE ORIGINS reveals the untold origins of the crew members of The Rocinante. As interplanetary tensions reach an all-time high, the crew of The Rocinante finds themselves at the center of a conflict that threatens to destroy all of human civilization. But before they were heroes, each member of the crew faced moments that would come to define them and brought them one step closer to the ship they now call home.