"Don't humbug, Max," said Carlyle severely. "This is no joke." An
undefined mistrust of his own powers suddenly possessed him in the
presence of this mystery. "How do you come to know of Nina Brun and
Lord Seastoke?"

"You are a detective, Louis," replied Carrados. "How does one know
these things? By using one's eyes and putting two and two together."

Carlyle groaned and flung out an arm petulantly.

"Is it all bunkum, Max? Do you really see all the time--though that
doesn't go very far towards explaining it."

"Like Vidal, I see very well--at close quarters," replied Carrados,
lightly running a forefinger along the inscription on the tetradrachm.
"For longer range I keep another pair of eyes. Would you like to test
them?"

Mr. Carlyle's assent was not very gracious; it was, in fact, faintly
sulky. He was suffering the annoyance of feeling distinctly
unimpressive in his own department; but he was also curious.

"The bell is just behind you, if you don't mind," said his host.
"Parkinson will appear. You might take note of him while he is in."

The man who had admitted Mr. Carlyle proved to be Parkinson.

"This gentleman is Mr. Carlyle, Parkinson," explained Carrados the
moment the man entered. "You will remember him for the future?"