When Seneca had fallen, it was easy to shake the position of Fænius Rufus by making Agrippina's friendship a charge against him. Tigellinus, who was daily becoming more powerful and who thought that the wicked schemings which alone gave him strength, would be better liked if he could secure the emperor's complicity in guilt, dived into Nero's most secret apprehensions, and, as soon as he had ascertained that Plautus and Sulla were the men he most dreaded, Plautus having been lately sent away to Asia, Sulla to Gallia Narbonensis, he spoke much of their noble rank and of their respective proximity to the armies of the East and of Germany. "I have no eye," he said, "like Burrus, to two conflicting aims, but only to Nero's safety, which is at least secured against treachery in Rome by my presence. As for distant commotions, how can they be checked? Gaul is roused at the name of the great dictator, and I distrust no less the nations of Asia, because of the renown of such a grandfather as Drusus. Sulla is poor, and hence comes his surpassing audacity; he shams apathy, while he is seeking an opening for his reckless ambition. Plautus again, with his great wealth, does not so much as affect a love of repose, but he flaunts before us his imitations of the old Romans, and assumes the self-consciousness of the Stoics along with a philosophy, which makes men restless, and eager for a busy life."
There was not a moment's delay. Sulla, six days afterwards, was murdered by assassins brought over to Massilia, while he was reclining at the dinner-table, before he feared or heard of his danger. The head was taken to Rome, and Nero scoffed at its premature grey hairs as if they were a disfigurement.