This program traces the development of Secret Writing from Byzantium to Al-Qaeda, and reveals the chemicals used to both produce the vanishing writing and then to the retrieval of the messages. The techniques were used for centuries by government officials, royalty, politicians, the military, lovers, and spies. See German Formula documents so advanced that they were held from the public for almost 100 years. How Royal heads were lost because of compromised messages written in invisible ink. See unique variations used by Greeks, Persians, Russians, French, Germans and the Confederacy. See what a Secret Writing Detection Station today uses to detect the presence of Secret Writing.