Tinker, Spacer, Psion, Spy details over eighteen careers specifically for use in the Twilight Sector Campaign Setting but easily adaptable for any Mongoose Traveller game. In addition the book is filled with options to personalize your character: Pre-adult Career Paths, Life Event charts, Extended Basic Training Skill Packages, Rules and Tips for Longevity and Alternate Injury Tables. All that and details on 30th century languages. TSPS greatly expands the Twilight Sector Campaign Setting.