o be seen of the man Brockman when they got outside.

"He has smelt a rat, and when he found the horse was being harnessed,
got away as quickly as possible," said Mr. Moncrief. "We shan't be
troubled with him again to-night."

Mr. Moncrief's surmise turned out to be correct. No further adventure
befel them on the homeward journey. Paul learned, by the way, that the
man Zuker was a German Jew of great ability and cunning. He was
suspected to be a spy in the service of a foreign Government--which
Government Mr. Moncrief did not mention, but Paul guessed which was
meant.

The spy's purpose in coming to England was to ascertain all he could as
to the defences of the Thames and the Medway.

"Can't you have the man arrested?" Paul asked, deeply interested in all
he heard, and feeling more and more convinced that this man Zuker was
the spy whom his father had saved from the sea at the risk of his own
life.

"He's too adroit. He's one of the craftiest spies the Admiralty has ever
had to deal with. We can get no direct evidence against him. Neither do
we know his exact whereabouts. He's like some nasty slug--you can only
tell where he's been by the slime he leaves behind. Of course, he has
one or two confederates to help him."

"I trust they aren't Englishmen, sir?" said Paul.

"I trust so, too. But I fear there are still Judases in the land--men
who would betray their country, as Judas betrayed his Lord and Master,
for money, though the price would be a great deal more than thirty
pieces of silver. Our enemies would give a great deal to get a draft of
some of the plans in the archives of the Admiralty, I can tell you,
Paul."

By this time they had reached Paul's home, to the great relief of Mrs.
Percival and Mr. Henry Moncrief, who had begun to fear that some mishap
had befallen Paul by the way. By the latter's request nothing was said
to his mother about the peril in which he had stood, for fear of
alarming her.

The two brothers had a short interview together. Then, as Mr. Henry
Moncrief's leg was still painful, it was decided that he should remain
at Rosemore--Paul's home--that night, and return to his own home the
next morning. His brother returned to Oakville that same night.

The next morning a carriage came for Mr. Henry Moncrief, to which he was
able to limp by the assistance of a manservant.

"I shan't regret the accident which has introduced me to you and your
son, madam," said he, as he wished Paul and