"Oh! yes, quite simple--unless some complications occur. Of course there is always a faint danger, but then it is so well worth it. What a strange thing to ask, though, dear boy! Were you thinking of Cousin Agatha?" "Cousin Agatha!" said Paul vaguely, and then recollected himself. "Oh, yes, of course--how is she?" But when he went off to his room to change, his mother's words stayed with him--"unless some complications occur"--and the thought opened a fresh field of anxious wonderment. At last it all seemed unbearable. A wild idea of rushing off to Vienna came to him--to rush there on the clue of a postmark--but common sense put this aside. It might be the means of just missing some message. No, he must bear things and wait. This silence, perhaps, meant good news--and if by the end of April nothing came, then he should have to break his promise and investigate. About this time Captain Grigsby again came to stay with them. And the next day, as he and his host smoked their pipes while they walked up and down the sunny terrace, he took occasion to give forth this information: "I say, Charles--I have located her--have you?" "No! By Jove!" said Paul's father. "Hubert is away, you know, and I have just let the thing slide--" "About the end of February did you notice the boy looking at all worried?" Sir Charles thought a moment. "Yes--I recollect--d--d worried and restless--and he is again now." "Ah! I thought so!" said Mark Grigsby, as though he could say a good deal more. "Well, then--out with it, Grig," Sir Charles said impatiently. And Captain Grigsby proceeded in his own style to weave together a chain of coincidences which had struck him, until this final certainty. They were a clear set of arguments, and Paul's father was convinced, too. "You see, Tompson told you in the beginning she was Russian," Captain Grigsby said after talking for some time, "and the rest was easy to find out. We're not here to judge the morals of the affair, Charles; you and I can only be thundering glad your grandson will sit on that throne all right."