From publisher blurb:
Add a touch of interstellar espionage and galactic conspiracy to your Starships & Spacemen 2E game. This supplement introduces the Shadow Agent Character Class which includes one new character skill set, five character subclasses, background on the Galactic Confederation Spacefleet's most mysterious branch, and a new mission ready starship to adventure in. The material in this supplement is compatible with the Labrinth Lord OSR game system and can easily be converted as source material for any other sci-fi game by adapting the mechanics.
The 2020 update includes all corrections, errata, and expanded art