Star Wars: Age of Rebellion - Cyphers and Masks (A Sourcebook for Spies)

Star Wars: Age of Rebellion - Cyphers and Masks (A Sourcebook for Spies) - Rules of Play says:

Cyphers and Masks is a sourcebook for the Star Wars™: Age of Rebellion Roleplaying Game that greatly expands the options and opportunities for the Spy career. At 96 full-color pages, Cyphers and Masks includes new specializations and species perfect for starting a new campaign or integrating into existing ones. New vehicles, equipment, and droids designed to be assets and adversaries to characters engaging in clandestine operations are included with new rules for utilizing the skills most often associated with Spies and their tradecraft. Gamemasters are also given additional tools and guidance for building stories for Spy characters with an emphasis on Intelligence and Counterintelligence operations.