Determined not to let go his hold on Perkin, the king promised him a full pardon upon condition that he confessed himself an impostor. Unable to discover any means of escape, the pretender accepted Henry's conditions, and on the 5th October surrendered to the royal troops at Taunton. He did not reach London until the end of November, and on his arrival was sent as a prisoner to the Tower. At first the supposed Richard was treated with much respect, and the evidence of his official examination kept strictly secret; although the garbled and absurd account of it which Henry caused to be published was so contradictory and generally unsatisfactory, that "men missing of that they looked for," says the chronicler, "looked about for they knew not what, and were in more doubt than before." Perkin, on his way to the Tower, was made to traverse the city on horseback, but not in any ignominious fashion; and although scoffed at by some, by the majority was treated with respect. After about six months of detention, the pretender contrived or was permitted to escape; but such diligent pursuit was made that he was compelled to again take sanctuary, and this time in the Priory of Shene, in Surrey. As soon as his retreat was publicly known, the King was advised to take him forth and hang him, but Henry was too prudent for such a course. At the intercession of the Prior of Shene, the King promised to spare the fugitive's life, bidding them "take him forth, and set the knave in the stocks." Taken from his place of refuge, and brought back to London, the wretched youth was fettered and placed for a whole day in the stocks, and on the following day, the 14th June, 1499, was compelled to read from a scaffold, erected in Cheapside, a lengthy and rambling confession, in which, among other matters, he acknowledged himself to be Perkin, son of John Warbeck, a Flemish tradesman, and that he had been taught to enact his part by various enemies of King Henry.