"Mr. Henkel!
"Was he Alone?"
"Yes, sir."
"Did you then immediately send Mr Page to the officer in charge?"
"I did, sir."
"And yourself?"
"Without allowing my glance to turn from Mr. Darrin's door, sir, I stepped out into the corridor, walked close to Mr. Darrin's room door, and then stood there until Lieutenant Nettleson and Mr. Hawkins arrived."
"Then, Mr. Farley, you are certain that there was no disorder in Mr. Darrin's room at the time when he and Mr. Dalzell left to recite in mathematics?
"I am absolutely positive, sir."
"And you are also certain that none but Mr. Henkel entered that room up to the time when the disorder was discovered by Lieutenant Nettleson?"