Cal Kestis has built a new life for himself with the crew of the Stinger Mantis. Together, Cal's crew has brought down bounty hunters, defeated Inquisitors, and even evaded Darth Vader himself. More importantly, Merrin, Cere, Greez, and faithful droid BD-1 are the closest thing Cal has had to a family since the fall of the Jedi Order. Even as the galaxy's future grows more uncertain by the day, with each blow struck against the Empire, the Mantis crew grows more daring. On what should be a routine mission, they meet a stormtrooper determined to chart her own course with the help of Cal and the crew. In exchange for help starting a new life, the Imperial deserter brings word of a powerful, potentially invaluable tool for their fight against the Empire. And even better, she can help them get to it. The only catch – pursuing it will bring them into the path of one of the Empire's most dangerous servants, the Inquisitor known as the Fifth Brother. Can the Imperial deserter truly be trusted? And while Cal and his friends have survived run-ins with the Inquisitors before, how many times can they evade the Empire before their luck runs out?