Upon the arrival of the men the Athenians determined to keep them in prison until the peace, and if the Peloponnesians invaded their country in the interval, to bring them out and put them to death. Meanwhile the defence of Pylos was not forgotten; the Messenians from Naupactus sent to their old country, to which Pylos formerly belonged, some of the likeliest of their number, and began a series of incursions into Laconia, which their common dialect rendered most destructive. The Lacedaemonians, hitherto without experience of incursions or a warfare of the kind, finding the Helots deserting, and fearing the march of revolution in their country, began to be seriously uneasy, and in spite of their unwillingness to betray this to the Athenians began to send envoys to Athens, and tried to recover Pylos and the prisoners. The Athenians, however, kept grasping at more, and dismissed envoy after envoy without their having effected anything. Such was the history of the affair of Pylos.