"If you go to rescue Richard Arden," the Mouldiestwarp said, "you make the greatest sacrifice of your life. For he who was called Richard Harding is Richard Arden, and it is he who is Lord Arden and not you or your father. And if you go to his rescue you will be taking from your father the title and the Castle, and you will be giving up your place as heir of Arden to your cousin Richard who is the rightful heir."

"But how is he the rightful heir?" Edred asked, bewildered.

"Three generations ago," said the Mouldiestwarp, "a little baby was stolen from Arden. Death came among the Ardens and that child became the heir to the name and the lands of Arden. The man who stole the child took it to a woman in Deptford, and gave it in charge to her to nurse. She knew nothing but that the child's clothes were marked Arden, and that it had, tied to its waist, a coral and bells engraved with a coat of arms. The man who had stolen the child said he would return in a month. He never returned. He fought in a duel and was killed. But the night before the duel he wrote a letter saying what he had done and put it in a secret cupboard behind a picture of a lady who was born an Arden, at Talbot Court. And there that letter is to this day."

"I hope I shan't forget it all," said Edred.

"None ever forgets what I tell them," said the Mouldiestwarp. "Finding that the man did not return, the Deptford woman brought up the child as her own. He grew up, was taught a trade and married a working girl. The name of Arden changed itself, as names do, to Harding. Their child was the father of Richard whom you know. And he is Lord Arden."

"Yes," said Edred submissively.

"You will never tell your father this," the low, beautiful voice went on; "you must not even tell your sister till you have rescued Dickie and made the sacrifice. This is the one supreme chance of all your life. Every soul has one such chance, a chance to be perfectly unselfish, absolutely noble and true. You can take this chance. But you must take it alone. No one can help you. No one can advise you. And you must keep the nobler thought in your own heart till it is a noble deed. Then, humbly and thankfully in that you have been permitted to do so fine and brave a thing and to draw near to the immortals of all ages who have such deeds to do and have done them, you may tell the truth to the one who loves you best, your sister Elfrida."

"But isn't Elfrida to have a chance to be noble too?" Edred asked.

"She will have a thousand chances to be good and noble. And she will take them all. But she will never know that she has done it," said the Mouldiestwarp gravely. "Now—are you ready to do what is to be done?"

"It seems very unkind to daddy," said Edred, "stopping his being Lord Arden and everything."