name of his accomplice. It may be a relation. One thing seems sure.
The man is, or was, a member of your staff, engaged in shipyard
inquiries. Can you give me a list of the men who are or have been on
this sort of work during the past few years?"

"I will get it for you. But please use it carefully. My present men
are precious jewels, the few left to me by zealous military
authorities. What I must look for is some one over military age who
has left me or been dismissed--probably dismissed. When a British
subject, of decent education and once respectable surroundings, gets
into the hands of German agents, you may be certain of one thing,
Dawson, that he has become a rotter through drink."

"That's it," cried Dawson. "You have hit it. Crime and drink are twin
brothers as no one knows better than the police. Look out for the name
and address of a man dismissed for drunkenness and we shall have our
bird."

"The name I can no doubt give you, but not the address."

"Give us any address where he lived, even if it were ten years ago,
and we will track him down in three days. That is just routine police
work."

"I never presume to teach an expert his business--and you, Dawson, are
a super-expert, a director-general of those of common qualities--but
would it not be well to warn all the Post Offices, so that when
another parcel is brought in addressed to the lieutenant the bearer
may be arrested?"