Brereton carefully cut open the flap of the envelope and drew out the enclosure--a square sheet of typewriting paper folded about a thin wad of Bank of England notes. He detached these at once and glanced quickly at them. There were six of them: all new and crisp--and each was for a hundred and fifty pounds. Brereton laid this money aside and opened the letter. This, too, was typewritten: a mere glance at its termination showed that it was anonymous. He sat down at Bent's desk and carefully read it through. There was no address: there was nothing beyond the postmark on the envelope to show where the letter came from; there was absolutely nothing in the contents to give any clue to the sender. But the wording was clear and plain. "MR. GIFFORD BRERETON,--Having learnt from the newspapers that you are acting as counsel for John Harborough, charged with the murder of a man named Kitely at Highmarket, I send you the enclosed £900 to be used in furthering Harborough's defence. You will use it precisely as you think fit. You are not to spare it nor any endeavour to prove Harborough's innocence--which is known to the sender. Whenever further funds are needed, all you need do is to insert an advertisement in the personal column of _The Times_ newspaper in these words: _Highmarket Exchequer needs replenishing_, with your initials added. Allow me to suggest that you should at once offer a reward of £500 to whoever gives information which will lead to the capture and conviction of the real murderer or murderers. If this offer fails to bring information speedily, double it. I repeat that no pains must be spared in this matter, and that money to any amount is no object. The sender of this letter will keep well informed of the progress of events as narrated in the newspapers, to which you will please to afford all proper information." Brereton read this extraordinary communication through three times; then he replaced letter and bank-notes in the envelope, put the envelope in an inner pocket, left the house, and walking across to the Northrop villa, asked to see Avice Harborough. Avice came to him in Mrs. Northrop's drawing-room, and Brereton glancing keenly at her as she entered saw that she was looking worn and pale. He put the letter into her hands with a mere word. "Your father has a powerful friend--somewhere," he said. To his astonishment the girl showed no very great surprise. She started a little at the sight of the money; she flushed at one or two expressions in the letter. But she read the letter through without comment and handed it back to him with a look of inquiry. "You don't seem surprised!" said Brereton.