the end of March, just
before your cousin set off on his journey to Russia. Is that correct?"

"Quite correct--to the letter," answered Allerdyke.

"Very well," said Chettle. "Now, according to you, that 'ud be not so
very long after you took that snapshot of your cousin? So, he'd probably
have the third print of it--the one we've just been looking at--on him
when he was in London at that time?"

"Very likely," assented Allerdyke.

"Then," said Chettle with great eagerness, "try, Mr. Allerdyke, try your
best and cleverest to find out if he gave it to Fullaway. You can
think--you with a sharp brain!--of some cunning fashion of finding that
out. What?"

"I don't know," replied Allerdyke, slowly and doubtfully. He possessed
quite as much ingenuity as Chettle credited him with, but his own
resourcefulness in that direction only inclined him to credit other men
with the possession of just the same faculty. "I don't know about that.
If James did give that print to Fullaway, and if Fullaway made use of it
as you think, Fullaway'll be far too cute ever to let on that it was
given to him. See!"

"I see that--been seeing it all through," answered Chettle. "All the
same, there's ways and means. Think of something--you know Fullaway a bit
by this time. Try it!"

"Oh, I'll try it, you bet!" exclaimed Allerdyke. "I'll try it for all
it's worth, and as cleverly as I can. In fact, I've already thought of a
plan, and if you don't want me any more just now, I'll go to the
post-office and send off a telegram that's something to do with it."

"Nothing more now, sir," answered Chettle. "But look here--you're not
going back to town to-night?"

"Why, that's just what I meant to do," replied Allerdyke. "There's naught
to stop here for, is there?"

"I'm expecting a message from the Christiania police some time this
afternoon or evening," said Chettle. "I cabled to them yesterday making
full inquiries about Lydenberg--he represented himself here, to Dr. Orwin
and the police-surgeons especially, as being a medical man in practice in
Christiania, who had come across to Hull on some entirely private family
business. Now, we've made the most exhaustive inquiries here in
Hull--there isn't a soul in the town knows anything whatever of
Lydenberg! I'm as certain as I am that I see you that he'd no business
here at all--except to kill and rob your cousin. And so, of course, we
want to know if he really was what he said he was, over there. I p