“To make a mess of the whole affair!” he growled. “No, sir; the die is cast. Eleanore Leavenworth knows the one point which fixes this crime upon her cousin, and she must tell us that point or suffer the consequences of her refusal.”

I made one more effort.

“But why to-morrow? Having exhausted so much time already in our inquiries, why not take a little more; especially as the trail is constantly growing warmer? A little more moleing——”

“A little more folderol!” exclaimed Mr. Gryce, losing his temper. “No, sir; the hour for moleing has passed; something decisive has got to be done now; though, to be sure, if I could find the one missing link I want——”

“Missing link? What is that?”

“The immediate motive of the tragedy; a bit of proof that Mr. Leavenworth threatened his niece with his displeasure, or Mr. Clavering with his revenge, would place me on the vantage-point at once; no arresting of Eleanore then! No, my lady! I would walk right into your own gilded parlors, and when you asked me if I had found the murderer yet, say ‘yes,’ and show you a bit of paper which would surprise you! But missing links are not so easily found. This has been moled for, and moled for, as you are pleased to call our system of investigation, and totally without result. Nothing but the confession of some one of these several parties to the crime will give us what we want. I will tell you what I will do,” he suddenly cried. “Miss Leavenworth has desired me to report to her; she is very anxious for the detection of the murderer, you know, and offers an immense reward. Well, I will gratify this desire of hers. The suspicions I have, together with my reasons for them, will make an interesting disclosure. I should not greatly wonder if they produced an equally interesting confession.”

I could only jump to my feet in my horror.

“At all events, I propose to try it. Eleanore is worth that much risk any way.”

“It will do no good,” said I. “If Mary is guilty, she will never confess it. If not——”

“She will tell us who is.”