Escalating guerrilla attacks by resistance forces and newfound evidence of a growing Separatist conspiracy are an immediate danger the Empire must meet with swift and brutal action. And to bring down a band of elusive freedom fighters, the Emperor turns to his most formidable agents: Darth Vader, the fearsome new Sith enforcer as remorseless as he is mysterious; and Tarkin -- whose tactical cunning and cold-blooded efficiency will pave the way for the Empire's supremacy ... and its enemies' extinction.