still, I must own. Great remorse or
great fright only can account for it."

"You will find many mysteries in this case, Mr. Gryce."

"As great a number as I ever encountered."

"I have to add one."

"Another?"

"It concerns the old butler."

"I thought you did not see him."

"I did not see him in the room where Mr. Adams lay."

"Ah! Where, then?"

"Upstairs. My interest was not confined to the scene of the murder.
Wishing to spread the alarm, and not being able to rouse any one below,
I crept upstairs, and so came upon this poor wretch going through the
significant pantomime that has been so vividly described in the papers."

"Ah! Unpleasant for you, very. I imagine you did not stop to talk to
him."

"No, I fled. I was extremely shaken up by this time and knew only one
thing to do, and that was to escape. But I carried one as yet unsolved
enigma with me. How came I to hear this man's cries in Mr. Adams's
study, and yet find him on the second floor when I came to search the
house? He had not time to mount the stairs while I was passing down the
hall."

"It is a case of mistaken impression. Your ears played you false. The
cries came from above, not from Mr. Adams's study."

"My ears are not accustomed to play me tricks. You must seek another
explanation."

"I have ransacked the house; there are no back stairs."

"If there were, the study does not communicate with them."

"And you heard his voice in the study?"

"Plainly."

"Well, you have given me a poser, madam."

"And I will give you another. If he was the perpetrator of this crime,
how comes it that he was not detected and denounced by the young people
I saw going out? If, on the contrary, he was simply the witness of
another man's blow--a blow which horrified him so much that it unseated
his reason--how comes it that he was able to slide away from the door
where he must have stood without attracting the attention and bringing
down upon himself the vengeance of the guilty murderer?"

"He may be one of the noiseless kind, or, rather, may have been such
before this shock unsettled his mind."

"True, but he would have been seen. Recall the position of the doorway.
If Mr. Adams fell where he was struck, the assailant must have had that
door directly before him. He could not have helped seeing any one
standing in it."

"That is true; your observations are quite correct. But those young
people were in a disordered state of mind. The condition in