sufficient to establish the murder, together with the report of Dr. Warwick Grey. But, meanwhile, are we any nearer to learning the identity of the murderer?"
"We are not!" said Wessex, grimly. "And what's more, when I get to Scotland Yard, I have got to face the music. First Mr. Harley goes, and now Nicol Brinn has disappeared!"
"It's almost unbelievable!"
"I took him for a white man," said the detective, earnestly. "I accepted his parole for twenty-four hours. The twenty-four hours expired about noon to-day, but since he played that trick on Stokes last night and went out of his chambers, he has vanished utterly."
Innes stood up excitedly.
"Your ideas may be all wrong, Wessex!" he cried. "Don't you see that he may have gone the same way as the chief?"
"He was mightily anxious to get out, at any rate."
"And you have no idea where he went?"
"Not the slightest. Following his performance of last night, of course I was compelled to instal a man in the chambers, and this morning someone rang up from the house of Lord Wolverham; he is commanding officer of one of the Guards battalions, I believe. It appears that Mr. Nicol Brinn not only locked up a representative of the Criminal Investigation De-
