"That's enough to go on with, anyhow," returned the detective. "Jackson, you and Roberts stop here for the present. If any one attempts to leave the house arrest them at once."
With an obedient salute the two constables fell back, and, followed by his other companions, Marsden mounted the steps.
"This is Doctor Sinclair, our divisional surgeon," he announced. "He tells me that he has already had the pleasure of meeting you."
Colin shook hands with a tall, gray-bearded man, whose face seemed vaguely familiar.
"And this," continued the Inspector, "is Detective Sergeant Humphries, of the Finger Print Department. Now I think the first thing we'll do is to go in and have a look at the body. I'll take your statement as soon as the doctor has finished his examination."
Without offering any comment, Colin conducted them down the corridor, and, leading the way across the hall, brought them to the door of the study.
Marsden halted in the entrance, and stood staring silently at the tragic spectacle in front of him.
"You followed my instructions?" he asked. "Everything is exactly as you found it!"
"Exactly," said Colin.
"Then I'll ask you two gentlemen to wait here for a moment. There's just one point I should like to make certain about before any one touches the body."