“Then we shall most certainly go. You and I and⁠—yes, why, Dr. Watson is the very man. Your correspondent says two friends. He and I have worked together before.”

“But would he come?” she asked, with something appealing in her voice and expression.

“I should be proud and happy,” said I, fervently, “if I can be of any service.”

“You are both very kind,” she answered. “I have led a retired life, and have no friends whom I could appeal to. If I am here at six it will do, I suppose?”

“You must not be later,” said Holmes. “There is one other point, however. Is this handwriting the same as that upon the pearl-box addresses?”

“I have them here,” she answered, producing half a dozen pieces of paper.