Lance Spicer's Underground Knowledge and Hidden Offshore and Privacy Secrets offer strategies for financial privacy and wealth building. The books detail methods for minimizing taxes legally, including offshore banking and investing. Spicer also discusses government surveillance techniques like Echelon and ways to protect personal privacy. The author's extensive experience in finance and accounting underpins his recommendations for alternative investment options and offshore jurisdictions. Finally, the text promotes several of Spicer's other books on related topics.