Lustrum Lustrum A lustrum (, plural lustra) was a term for a five-year period in Ancient Rome. The lustration was originally a sacrifice for expiation and purification offered by one of the censors in the name of the Roman people at the close of the taking of the census. The sacrifice was often in the form of an animal sacrifice, known as a suovetaurilia. These censuses were taken at five-year intervals, thus a lustrum came to refer to the five-year inter-census period. ' (from ', ) is a lustration or purification of the whole Roman people performed by one of the
Lustrum (novel) Lustrum (novel) Lustrum (US: Conspirata; 2009) is a historical novel by British author Robert Harris. It is the sequel to "Imperium" and the middle volume of a trilogy about the life of Cicero (106–43 BC). For its 2010 release in the United States, and Italy, it was retitled "Conspirata". The book continues in the format of the first novel, with the story told in the first-person from the point of view of Cicero's secretary Tiro. It follows on immediately from "Imperium", starting with the beginning of Cicero's consulship and ending with his exile as a result of the enmity of