critical mass: expeditionary force, book 10 audible <p>the merry band of pirates are in desperate trouble after the end of their last mission, and the real danger to humanity is just getting started. </p> <p>hostile aliens have discovered there is something odd going on with wormholes in the galaxy, and their investigations could lead to finding a shortcut to earth.... </p> <p><b>please note: when you purchase this title, the accompanying pdf will be available in your audible library along with the audio.</b></p>