y don’t we do an international drug testing service?” Caudevilla told me when I visited the other Energy Control lab, in Madrid. Caudevilla, a stocky character with ear piercings and short, shaved hair, has eyes that light up whenever he discusses the world of the deep web. Later, via email, he elaborated that it was not a hard sell. “It was not too hard to convince them,” he wrote me. Clearly, Energy Control believed that the reputation he had earned as an unbiased medical professional on the deep 