When he had accepted, or rather suggested, a Persian mission to his partner, an American banker, to whose firm an influential English friend had introduced him when he first turned his thoughts towards an American haven of refuge, he had done so in order to escape, if only for a few months, from a state of things brought about by what he was wont to consider the second great misfortune of his life. Downing was one of those men who seemed fated to make mistakes, and then to amaze those about them by the fashion in which they face and overcome the consequences. Owing, perhaps, to sheer good luck, after having endured a kind of disgrace only comparable to that which may be felt by a soldier who has been proved a traitor to his cause and country, Downing had so acted that in twenty years--a few moments in a nation's diplomatic life--he had received, not only the formal rehabilitation and recognition implied by his G.C.B., but what, to tell truth, he had valued at the moment far more highly: a touching letter from the venerable statesman who had rejected his boyish appeal for mercy. The old man had asked that he might himself convey to Downing the news of the honour bestowed on him, and he had done so in a letter full of honourable amend, of which one passage ran: 'As I grow older I have become aware of having done many things which I should have left undone; the principal of these, the one I have long most regretted, was my action concerning your case.' Only one human being, and that a woman whose sympathy was none the less valued because she had scarcely understood all it had meant to her friend, was ever shown the letter which had so moved and softened him. But from the day he received it the thought of going home, back to England, never left him, and he would have accomplished his purpose long before, had it not been that the consequence of his second great mistake still pursued him. II