"Oh, go ahead. You won't stump me!" Granice heard himself say with a
laugh.

"Well--how did you make all those trial trips without exciting your
sister's curiosity? I knew your night habits pretty well at that
time, remember. You were very seldom out late. Didn't the change in
your ways surprise her?"

"No; because she was away at the time. She went to pay several
visits in the country soon after we came back from Wrenfield, and
was only in town for a night or two before--before I did the job."

"And that night she went to bed early with a headache?"

"Yes--blinding. She didn't know anything when she had that kind. And
her room was at the back of the flat."

Denver again meditated. "And when you got back--she didn't hear you?
You got in without her knowing it?"

"Yes. I went straight to my work--took it up at the word where I'd
left off--_why, Denver, don't you remember?_" Granice suddenly,
passionately interjected.

"Remember--?"

"Yes; how you found me--when you looked in that morning, between two
and three ... your usual hour ...?"