Tell us how you arrive at your conclusion.

Show us that you have really weighed the facts." "Very well," said Jervis, "I will give you a masterly analysis of the case--leading to nothing." He continued to puff at his pipe for a time with slight embarrassment, as I thought--and I fully sympathised with him.

Finally he blew a little cloud and commenced: "The position appears to be this: Here is a man who is seen to enter a certain house, who is shown into a certain room and shut in.

He is not seen to come out, and yet, when the room is next entered, it is found to be empty; and that man is never seen again, alive or dead.

That is a pretty tough beginning.
"Now, it is evident that one of three things must have happened.