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which I had seen the young man read with so much interest, this was certainly it. But how came it here? Had I not seen him thrust it back into its envelope and afterward put envelope and all into his pocket? But here was no envelope, and here was the letter. By what freak of necromancy had it been transferred from its legitimate quarters to this spot? I could not imagine. Suddenly I remembered that his hand had been full of the other letters when he put, or endeavored to put, this special one back into its envelope, and however unaccountable it may seem, it must be that from haste or agitation he had only succeeded in thrusting it between two letters instead of into the envelope, as he supposed. Whether or not this explanation be true, there was no doubt about my luck being in the ascendant. Mastering my satisfaction, I read these lines written in what appeared to be a disguised hand.

"All goes well. The time has come; every thing is in train, and success is certain. Be in the shrubbery at the northeast corner of the grounds at 9 P.M. precisely; you will be given a mask and such other means as are necessary