quite light, and he was by no means the only pedestrian on the street;
a moment's preliminary, even if cursory, examination of the exterior
would not be amiss! Counting the numbers ahead of him, he had already
located the house. He frowned a little. A light burned in the upstairs
front room. There was a light in the lower hallway as well, but that was
to be expected. Why the one upstairs? Had the Colonel and Mrs. Milford
already finished their dinner?

Jimmie Dale reached the house--and casually, without hesitation, mounted
the steps--and quite as casually, making a pretence of ringing the
electric bell, opened the unlocked outer door, stepped into the
vestibule, and, without a sound now, closed the door behind him.

He tried the inner door tentatively. It was locked, of course--but it
was locked only for an instant. From the girdle under his vest came a
little steel instrument; there was a faint, almost inaudible, protesting
_snip_ from the interior of the lock; and, his fingers turning the knob
with a steady, silent pressure, he opened the door slightly.

Crouched there, he listened. And then, a smile of relief flickering on
his lips, he pushed the door open, and slipped into the hallway. The
explanation of the light upstairs was that it had probably been left
burning inadvertently. They were still at dinner, for he could hear
voices from the dining room at the rear of the hall.

As silent as a shadow now, Jimmie Dale, closing the inside door, moved
across the hall, and went up the stairs. On the landing he paused; and
then advanced cautiously. The light streamed out from the open door of
the front room, and there was always the possibility that--no, a glance
from where he stood close against the wall at the edge of the door jamb,