Ah, yes, I remembered.
"Unquestionably, Thaneford was carrying out a perfectly definite plan of procedure. He knew what ought to have happened."
"But it didn't happen," I protested. "I'm here and very much alive."
"It did, and it didn't," retorted Warriner. "John Thaneford is dead."
"You mean—you mean——" I boggled.
"Yes, the Terror had entered the room; don't you recall how close I kept to the wall when I was trying to reach you? But it had become a blind Terror, and John Thaneford got in its way."
"But how and why?" I asked helplessly.
"Betty, it's your turn again," said Warriner, settling back in his chair.