Ab urbe condita
Titus Livius (Livy)
Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.
The foremost men in the State were being attacked by the same malady, and in almost every case with the same fatal results. A maid-servant went to Q. Fabius Maximus, one of the curule aediles, and promised to reveal the cause of the public mischief if the government would guarantee her against any danger in which her discovery might involve her.
Fabius at once brought the matter to the notice of the consuls and they referred it to the senate, who authorised the promise of immunity to be given.