For more than 3,000 years, emperors and generals, dictators and police, criminals, clerics, and even medical doctors have created and used a vast array of torture devices–everything from the ancient Greeks’ Brazen Bull, which slowly barbecued the victim, to the elaborate mechanical apparatuses of the Spanish Inquisition. A medical doctor who specializes in victims of torture reveals how the human body responds to their use–from the earliest excruciating contrivances to the more modern.