The house was a typical summer residence on an extensive scale.  Wherever possible, on the first floor, the architect had done away with partitions, using arches and columns instead.  The effect was cool and spacious, but scarcely cozy.  As Liddy and I went from one window to another, our voices echoed back at us uncomfortably.  There was plenty of light—­the electric plant down in the village supplied us—­but there were long vistas of polished floor, and mirrors which reflected us from unexpected corners, until I felt some of Liddy’s foolishness communicate itself to me.

The house was very long, a rectangle in general form, with the main entrance in the center of the long side.  The brick-paved entry opened into a short hall to the right of which, separated only by a row of pillars, was a huge living-room.  Beyond that was the drawing-room, and in the end, the billiard-room.  Off the billiard-room, in the extreme right wing, was a den, or card-room, with a small hall opening on the east veranda, and from there went up a narrow circular staircase.  Halsey had pointed it out with delight.

“Just look, Aunt Rachel,” he said with a flourish.  “The architect that put up this joint was wise to a few things.  Arnold Armstrong and his friends could sit here and play cards all night and stumble up to bed in the early morning, without having the family send in a police call.”

Liddy and I got as far as the card-room and turned on all the lights.  I tried the small entry door there, which opened on the veranda, and examined the windows.  Everything was secure, and Liddy, a little less nervous now, had just pointed out to me the disgracefully dusty condition of the hard-wood floor, when suddenly the lights went out.  We waited a moment; I think Liddy was stunned with fright, or she would have screamed.  And then I clutched her by the arm and pointed to one of the windows opening on the porch.  The sudden change threw the window into relief, an oblong of grayish light, and showed us a figure standing close, peering in.  As I looked it darted across the veranda and out of sight in the darkness.

CHAPTER II

A LINK CUFF-BUTTON

Liddy’s knees seemed to give away under her.  Without a sound she sank down, leaving me staring at the window in petrified amazement.  Liddy began to moan under her breath, and in my excitement I reached down and shook her.

“Stop it,” I whispered.  “It’s only a woman—­maybe a maid of the Armstrongs’.  Get up and help me find the door.”  She groaned again.  “Very well,” I said, “then I’ll have to leave you here.  I’m going.”

She moved at that, and, holding to my sleeve, we felt our way, with numerous collisions, to the billiard-room, and from there to the drawing-room.  The lights came on then, and, with the long French windows unshuttered, I had a creepy feeling that each one sheltered a peering face.  In fact, in the light of what happened afterward, I am pretty certain we were under surveillance during the entire ghostly evening.  We hurried over the rest of the locking-up and got upstairs as quickly as we could.  I left the lights all on, and our footsteps echoed cavernously.  Liddy had a stiff neck the next morning, from looking back over her shoulder, and she refused to go to bed.