As I crossed the threshold the sound grew louder, and to my horror the door closed suddenly behind me.

Hurriedly striking a match, I held it above my head and peered about me.

Its light revealed a small apartment finished in polished wood.

Along the angle of the floor was an opening, two or three inches high, into the side walls.

And half way up the wall in front of me I saw a face--the face of a maniac it seemed to be--pale and wan, with strange, inhuman eyes.