The man took the card that was handed to him and retired.  Moody offered his arm to Isabel.  “I am at your service,” he said, “when you wish to return to your aunt.”

They had advanced nearly as far as the tent, on their way out of the grounds, when they were met by a gentleman walking towards them from the cottage.  He was a stranger to Isabel.  Moody immediately recognized him as Mr. Felix Sweetsir.

“Ha! our good Moody!” cried Felix.  “Enviable man! you look younger than ever.”  He took off his hat to Isabel; his bright restless eyes suddenly became quiet as they rested on her.  “Have I the honor of addressing the future Mrs. Hardyman?  May I offer my best congratulations?  What has become of our friend Alfred?”

Moody answered for Isabel.  “If you will make inquiries at the cottage, sir,” he said, “you will find that you are mistaken, to say the least of it, in addressing your questions to this young lady.”

Felix took off his hat again—­with the most becoming appearance of surprise and distress.

“Something wrong, I fear?” he said, addressing Isabel.  “I am, indeed, ashamed if I have ignorantly given you a moment’s pain.  Pray accept my most sincere apologies.  I have only this instant arrived; my health would not allow me to be present at the luncheon.  Permit me to express the earnest hope that matters may be set right to the satisfaction of all parties.  Good-afternoon!”

He bowed with elaborate courtesy, and turned back to the cottage.

“Who is that?” Isabel asked.

“Lady Lydiard’s nephew, Mr. Felix Sweetsir,” Moody answered, with a sudden sternness of tone, and a sudden coldness of manner, which surprised Isabel.

“You don’t like him?” she said.

As she spoke, Fe lix stopped to give audience to one of the grooms, who had apparently been sent with a message to him.  He turned so that his face was once more visible to Isabel.  Moody pressed her hand significantly as it rested on his arm.

“Look well at that man,” he whispered.  “It’s time to warn you.  Mr. Felix Sweetsir is the worst enemy you have!”

Isabel heard him in speechless astonishment.  He went on in tones that trembled with suppressed emotion.

“You doubt if Sharon knows the thief.  You doubt if I know the thief.  Isabel! as certainly as the heaven is above us, there stands the wretch who stole the bank-note!”

She drew her hand out of his arm with a cry of terror.  She looked at him as if she doubted whether he was in his right mind.

He took her hand, and waited a moment trying to compose himself.