realized that the light, which was now moving slowly across the
bookcase, was a real light.

That the man behind it could not have been there long was plain, or
he would have seen the chair and its occupant. He seemed to be
taking the room step by step. As Jimmy sat up noiselessly and
gripped the arms of the chair in readiness for a spring, the light
passed from the bookcase to the table. Another foot or so to the
left, and it would have fallen on Jimmy.

From the position of the ray, Jimmy could see that the burglar was
approaching on his side of the table. Though until that day he had
not been in the room for two months, its geography was clearly
stamped on his mind's eye. He knew almost to a foot where his
visitor was standing. Consequently, when, rising swiftly from the
chair, he made a football dive into the darkness, it was no
speculative dive. It had a conscious aim, and it was not restrained
by any uncertainty as to whether the road to the burglar's knees was
clear or not.

His shoulder bumped into a human leg. His arms closed
instantaneously on it, and pulled. There was a yelp of dismay, and a
crash. The lantern bounced away across the room, and wrecked itself
on the reef of the steam-heater. Its owner collapsed in a heap on
top of Jimmy.

Jimmy, underneath at the fall, speedily put himself uppermost with a
twist of his body. He had every advantage. The burglar was a small
man, and had been taken very much by surprise, and any fight there
might have been in him in normal circumstances had been shaken out