Who was the Japanese speaker?

I crept to the door, and opened it slightly.

Not a soul was there.

I heard the trivial clatter of the kitchen stepping up.

I dipped into my bed again. I smiled sceptically, thinking that I must have been dreaming.

“Gokigen ikaga?”

I was addressed again by the same voice.

I said that there was positively some mischief in my room.

I leaped down from the bed.

I inspected my slippers. I made sure there was nothing strange under the pictures on the wall. I tugged at the drawers. I tumbled every blanket. I pried in the pitcher.