An eye for an eye

"Hush! Think, if you were overheard!" "Well, my dear fellow, I only assert what's true," I said. "I really can't believe it," observed my companion, shaking his head doubtfully. "But I'm absolutely satisfied," I answered. "The two affairs, mysterious as they are, are more closely connected than we imagine. I thought I had convinced you by my arguments. A revelation will be made some day, and it will be a startling one-depend upon it."