There's only trouble comes of hunting ghosts; they lead you
into bottomless pits and things like that. Oh, Miss Rachel, don't--" as
I tried to get past her.

She was interrupted by Mr. Jamieson's reappearance. He ran up the
stairs two at a time, and his face was flushed and furious.

"The whole place is locked," he said angrily. "Where's the laundry key
kept?"

"It's kept in the door," Liddy snapped. "That whole end of the cellar
is kept locked, so nobody can get at the clothes, and then the key's
left in the door? so that unless a thief was as blind as--as some
detectives, he could walk right in."

"Liddy," I said sharply, "come down with us and turn on all the lights."

She offered her resignation, as usual, on the spot, but I took her by
the arm, and she came along finally. She switched on all the lights
and pointed to a door just ahead.

"That's the door," she said sulkily. "The key's in it."

But the key was not in it. Mr. Jamieson shook it, but it was a heavy
door, well locked. And then he stooped and began punching around the
keyhole with the end of a lead-pencil. When he stood up his face was
exultant.

"It's locked on the inside," he said in a low tone. "There is somebody
in there."

"Lord have mercy!" gasped Liddy, and turned to run.

"Liddy," I called, "go through the house at once and see who is
missing, or if any one is. We'll have to clear this thing at once.
Mr. Jamieson, if you will watch here I will go to the lodge and find
Warner. Thomas would be of no use. Together you may be able to force
the door."

"A good idea," he assented. "But--there are windows, of course, and
there is nothing to prevent whoever is in there from getting out that
way."

"Then lock the door at the top of the basement stairs," I suggested,
"and patrol the house from the outside."

We agreed to this, and I had a feeling that the mystery of Sunnyside
was about to be solved. I ran down the steps and along the drive.
Just at the corner I ran full tilt into somebody who seemed to be as
much alarmed as I was. It was not until I had recoiled a step or two
that I recognized Gertrude, and she me.

"Good gracious, Aunt Ray," she exclaimed, "what is the matter?"

"There's somebody locked in the laundry," I panted. "That
is--unless--you didn't see any one crossing the lawn or skulking around
the house, did you?"

"I think we have mystery on the brain," Gertrude said wearily. "No, I
haven't seen any one