Agrippina had done and suffered much to secure the Empire for her son; but she never contemplated that he would reign alone while she lived. She expected to occupy a throne by his side. Her officious dominance soon became intolerable to the young emperor. He also fell under the fascination of the beautiful but unprincipled Poppæa, who refused to share his palace with so jealous and imperious a mother-in-law. Bitter must have been the reflections of Agrippina when she found herself not only disappointed of this part of her ambition, but also saw that her son was impatiently awaiting her death. Indeed, he was devising means to bring it to pass; but she who was herself so well practised in the methods of assassination was not an easy victim. The sword was too open a method, and she was believed to have prepared herself, by taking antidotes, against all kinds of poisons. But there was a genius at the court. Anicetus, an enfranchised slave, now commander of the fleet, could construct a vessel that would fall to pieces at sea at any given moment. Agrippina was invited to join her son at Baise. He was all affection and again seemed willing to commit himself to her influence. A magnificent vessel was provided to convey her to and from the villa where he had provided an entertainment. As she was returning over the smooth waters, lighted by the brilliant stars, the roof of the cabin, which had been weighted with lead, suddenly fell in, killing a man who belonged to her train. Agrippina and Aceronia, her woman attendant, escaped from this part of the prearranged accident; but the boat then upsetting, they were thrown into the sea. Aceronia, in order that she might be rescued, cried out that she was the emperor's mother, and she was immediately killed by oars and boathooks in the hands of the crew. Her mistress, however, suspecting at once the real nature of what had taken place, remained quiet, and swam until she was picked up by passing boats and conveyed to her own villa. At the prospect of his mother's death, Nero exclaimed: "At last I shall reign"; but when the news reached him that the cunningly contrived shipwreck had proved a failure, his fury knew no bounds. At that juncture, a messenger arrived from Agrippina to say that his mistress had been preserved--she deemed it prudent to appear to take it for granted that her son was not implicated in the attempt upon her life. While the messenger was speaking, Anicetus picked up a dagger from the floor and pretended that the man had dropped it; it was then declared that Agrippina must have sent him to assassinate her son. A party of men were at once sent to her villa. They broke into her bedchamber. "If you are come for murderous purposes," she cried, "I will not believe that it is by the order of my son." She was quickly despatched with many wounds.