Well, it shall be that reason.

On the night of the murder do you remember coming downstairs and going or rather looking into the study--at one o'clock in the morning ?" Rachel recoiled in her chair.
"Heavens!" she cried.

"How can you know that ?" "Did you hear nothing as you went upstairs again ?" "I don't remember." "Not a rattle at the letter-box ?" "Yes! Yes! Now I do remember.

And it was actually you!" "It was, indeed," said Steel, gravely.

"I saw you come down, I saw you peep in--all dread and reluctance! I saw you recoil, I saw the face with which you shut those doors and put out the lights.