They accordingly set out and rode straight to the camp of the Duke of Arcos and gave themselves up to the outposts, by whom they were led before the Spanish general.

Questioned by him, they repeated the story they had been taught.
The statement was that they had been sitting drinking wine together under some rocks on the hillside, close to where the conference was held, and that Peterborough and Mahony, walking apart from the others, came near to where they were sitting, but did not notice them, and that they saw the earl deliver five thousand pistoles to Mahony, and heard him promise to make him a major general in the English army, and to give him the command of ten thousand Irish Catholics which were being raised for the service of King Charles.

They said that they were content to receive no reward, but to be shot as spies if Mahony himself did not give proof of treachery by carrying out his arrangements with the earl, by sending a messenger requesting the duke to march that night across the plain toward Murviedro to the Carthusian convent, where everything would be arranged for their destruction by a strong ambush of British troops.
Scarcely had the men finished their story when an aide de camp galloped in from Mahony with the very proposition which they had reported that he would make.

Arcos had now no doubt whatever of Mahony's treason, and instead of complying with his request, which was obviously the best course to have been pursued, as the junction of the two armies would thereby have been completed, the duke broke up his camp without delay and fell back in exactly the opposite direction.
This was exactly what Peterborough had been scheming to bring about.
Mahony, with his cavalry, having delivered over the town, marched to the Carthusian convent, and there, finding themselves unsupported, rode on to the spot where the duke had been encamped, and finding that his army was gone, followed it.

On overtaking it Mahony was instantly arrested and sent a prisoner to Madrid.
It is satisfactory to know that he succeeded in clearing himself from the charge of treachery, was promoted to the rank of major general, and was sent back with Las Torres, who was ordered to supersede the Duke of Arcos.
The success of the earl's stratagem had been complete.