And yet if it were on the lawn, I wonder that you did not hear it also.' "'Ah, but I sleep more heavily than you.' "'Well, it is of no great consequence, at any rate.' She smiled back at me, closed my door, and a few moments later I heard her key turn in the lock." "Indeed," said Holmes.

"Was it your custom always to lock yourselves in at night ?" "Always." "And why ?" "I think that I mentioned to you that the doctor kept a cheetah and a baboon.

We had no feeling of security unless our doors were locked." "Quite so.

Pray proceed with your statement." "I could not sleep that night.

A vague feeling of impending misfortune impressed me.