The Duke's glance fell on the letter which Knowles had brought him when he first had entered. He had placed it on his writing-table. Now he took it up. It was addressed: "To His Grace "The Duke of Datchet. "Private! "Very Pressing!!!" The name was written in a fine, clear, almost feminine hand. The words in the left-hand corner of the envelope were written in a different hand. They were large and bold; almost as though they had been painted with the end of the penholder instead of being written with the pen. The envelope itself was of an unusual size, and bulged out as though it contained something else besides a letter. The Duke tore the envelope open. As he did so something fell out of it on to the writing-table. It looked as though it was a lock of a woman's hair. As he glanced at it the Duke seemed to be a trifle startled. The Duke read the letter: "Your Grace will be so good as to bring five hundred pounds (L500) in gold to the Piccadilly end of the Burlington Arcade within an hour of the receipt of this. The Duchess of Datchet has been kidnapped. An imitation duchess got into the carriage, which was waiting outside Cane and Wilson's and she alighted on the road. Unless your Grace does as you are requested the Duchess of Datchet's left-hand little finger will be at once cut off, and sent home in time to receive the Prince to dinner. Other portions of her Grace will follow. A lock of her Grace's hair is enclosed with this as an earnest of our good intentions. "_Before_ 5.30 _p.m_. your Grace is requested to be at the Piccadilly end of the Burlington Arcade with five hundred pounds (L500) in gold. You will there be accosted by an individual in a white top-hat, and with a gardenia in his button-hole. You will be entirely at liberty to give him into custody, or to have him followed by the police. In which case the Duchess's left arm, cut off at the shoulder, will be sent home for dinner--not to mention other extremely possible contingencies. But you are _advised_ to give the individual in question the five hundred pounds in gold, because in that case the Duchess herself will be home in time to receive the Prince to dinner, and with one of the best stories with which to entertain your distinguished guests they ever heard. "Remember! _not later than_ 5.30, unless you wish to receive her Grace's little finger." The Duke stared at this amazing epistle when he had read it as though he had found it difficult to believe the evidence of his eyes. He was not a demonstrative person as a rule, but this little communication astonished even him. He read it again. Then his hands dropped to his sides and he swore.