Amphares, Damochares, and Arcesilaus often visited Agis, and he was so confident of their fidelity that after a while he was prevailed on to accompany them to the baths, which were not far distant, they constantly returning to see him safe again in the temple. They were all three his familiars; and Amphares had borrowed a great deal of plate and rich household stuff from Agesistrata, and hoped if he could destroy her and the whole family, he might peaceably enjoy those goods. And he, it is said, was the readiest of all to serve the purposes of Leonidas, and being one of the ephors, did all he could to incense the rest of his colleagues against Agis. These men, therefore, finding that Agis would not quit his sanctuary, but on occasion would venture from it to go to the bath, resolved to seize him on the opportunity thus given them. And one day as he was returning, they met and saluted him as formerly, conversing pleasantly by the way, and jesting, as youthful friends might, till coming to the turning of a street which led to the prison, Amphares, by virtue of his office, laid his hand on Agis, and told him, "You must go with me, Agis, before the other ephors, to answer for your misdemeanours." At the same time Damochares, who was a tall, strong man, drew his cloak tight round his neck, and dragged him after by it, whilst the others went behind to thrust him on. So that none of Agis's friend being near to assist him, nor any one by, they easily got him into the prison, where Leonidas was already arrived, with a company of soldiers, who strongly guarded all the avenues; the ephors also came in, with as many of the Elders as they knew to be true to their party, being desirous to proceed with some semblance of justice. And thus they bade him give an account of his actions. To which Agis, smiling at their dissimulation, answered not a word. Amphares told him it was more seasonable to weep, for now the time was come in which he should be punished for his presumption. Another of the ephors, as though he would be more favourable, and offering as it were an excuse, asked him whether he was not forced to what he did by Agesilaus and Lysander. But Agis answered, he had not been constrained by any man, nor had any other intent in what he did but only to follow the example of Lycurgus, and to govern conformably to his laws. The same ephor asked him whether now at least he did not repent his rashness. To which the young man answered that though he were to suffer the extremest penalty for it, yet he could never repent of so just and so glorious a design.
Upon this they passed sentence of death on him, and bade the officers carry him to the Dechas, as it is called, a place in the prison where they strangle malefactors. And when the officers would not venture to lay hands on him, and the very mercenary soldiers declined it, believing it an illegal and a wicked act to lay violent hands on a king, Demochares, threatening and reviling them for it, himself thrust him into the room.
For by this time the news of his being seized had reached many parts of the city, and there was a concourse of people with lights and torches about the prison gates, and in the midst of them the mother and the grandmother of Agis, crying out with a loud voice that their king ought to appear, and to be heard and judged by the people. But this clamour, instead of preventing, hastened his death; his enemies fearing, if the tumult should increase, he might be rescued during the night out of their hands.
Agis, being now at the point to die, perceived one of the officers bitterly bewailing his misfortune; "Weep not, friend," said he, "for me, who die innocent, by the lawless act of wicked men. My condition is much better than theirs." As soon as he had spoken these words, not showing the least sign of fear, he offered his neck to the noose.