Book excerpt: Thee Temple ov Psychick Youth, or TOPY, will be remembered as a cultural phenomenon that influenced underground youth culture in the 80s and 90s, popularising tattooing, body piercing, 'acid house' raves and other ahead-of-the-curve cultic flirtations and investigations. Presented here are Thee Black Book and Thee Grey Book, containing the original theories and writings of TOPY as well as the basic manual on the methods and practices of TOPY sigilisation.