"How do you know?"
"I--I saw him--go out," she stammered, with sudden confusion.
"When?"
"I--didn't notice."
"But you saw him leave the house?"
"Yes, sir. He came down--he went down the steps from the library, and went off."
"Off to the street, you mean?"
"Yes, sir."
"Did he speak to you?"
"Oh, no, sir. He didn't see me."