"A conspiracy, Noel?"
"Yes. Chaldea hates you because the fool has chosen to fall in love with me. The discovery of this letter has placed a weapon in her hand to do you an injury, and for the sake of money Silver is assisting her. I will do Chaldea the justice to say that I don't believe she asks a single penny for the letter. To spite you she would go at once to the police. But Silver, seeing that there is money in the business, has prevented her doing so. As to this letter—" He stopped and rubbed his chin again vexedly.
"It must be a forgery."
"Without doubt, but not of your handwriting, I fancy, in spite of what this daring blackguard says. He informed you that the letter stated how you intended to elope with me on that night, and would leave The Manor by the blue door. Also, on the face of it, it would appear that you had written the letter to your husband, since otherwise it would not have been in his possession. You would not have given him such a hint had an elopement really been arranged."
Agnes frowned. "There was no chance of an elopement being arranged," she observed rather coldly.
"Of course not. You and I know as much, but I am looking at the matter from the point of view of the person who wrote the letter. It can't be your forged handwriting, for Pine would never have believed that you would put him on the track as it were. No, Agnes. Depend upon it, the letter was a warning sent by some sympathetic friend, and is probably an anonymous one."
Agnes nodded meditatively. "You may be right, Noel. But who wrote to Hubert?"
"We must see the letter and find out."
"But if it is my forged handwriting?"
"I don't believe it is," said Lambert decisively. "No conspirator would be so foolish as to conduct his plot in such a way. However, Chaldea has the letter, according to Silver, and we must make her give it up. She is sure to be here soon, as she always comes bothering Mrs. Tribb in the afternoon about my health. Just ring that hand-bell, Agnes."