"And when you again came to the library door Miss Trevor was standing there and Effingham was gone?"
"Yes."
"Then it is possible that Miss Trevor may have entered the room—let us say—for the purpose of replacing the despatch-box in its original position?"
"Possible—yes."
"Which implies that she must have paid a previous visit to the room and carried the box away?"
"If you like."
"We assume that the despatch-box held important papers belonging to Mr. Graeme——"
"Including his will," interjected Miss Graeme.
"But I thought that Mr. Eldon——" I began in surprise.
"I was referring to an earlier will," returned my Cousin Betty. "But I forget that you don't know about that. It reads exactly like the present one except that John Thaneford is named as the residual heir."