Professional magician Jim Kleefeld reflects on six decades of performing magic, revealing his strategic journey from children's performer to mentalism authority. Jim discusses writing "Locked" to establish credibility before tackling "The Book Test Book" - a comprehensive encyclopedia covering 600+ book tests from 1584-2020. He shares his meticulous research process, his wife's suggestion for the book's Easter egg, and insights on building respect and lasting friendships in the magic community.