Read it through once

“Yes,” he answered. Then he bit his lip. “No, I don’t mean that. I didn’t go to the club. I walked about. I forget what I did.... How inquisitive you are, Harry! You always want to know what one has been doing. I always want to forget what I have been doing. I came in at half-past two, if you wish to know the exact time. I had left my latch-key at home, and my servant had to let me in. If you want any corroborative evidence on the subject, you can ask him.”