“I don’t know whether I could or not, but I didn’t. The first shot was when we were finishing tea on the lawn; we spoke about it. Soon after that I went to the field for daisies. I heard no more shots. Often when I am alone like that my mind is on — on myself. That may be comprehensible to you. Perhaps I could have heard the shots, but I didn’t.”
“I see.” Wolfe closed his eyes. After a moment he opened them again and directed them at the veil. “If I were you,” he suggested, “I’d be a little circumspect about stating what you know, when you possess no evidence. After this thing gets in the papers it will be pretty nasty.”
“Nasty?” That awful little laugh fluttered the veil. “You mean what I said about April.”
“Yes. If she committed murder she’ll probably pay for it. In the meantime—”
“But she did! I know she did! I possess no evidence, but someone else does!”
“Indeed. Who?”
“I don’t know.”
“Where is it?”
“I don’t know.”
“What is it?”