where they go. But if that is the extent of your information I
can supplement it. He has had extensive alterations made to the
house he bought in Cadogan Square; the room in which he lives is
practically a safe."

Sir George raised his eyebrows.

"A safe," he repeated.

T. X. nodded.

"A safe," he said; "its walls are burglar proof, floor and roof
are reinforced concrete, there is one door which in addition to
its ordinary lock is closed by a sort of steel latch which he lets
fall when he retires for the night and which he opens himself
personally in the morning. The window is unreachable, there are
no communicating doors, and altogether the room is planned to
stand a siege."

The Chief Commissioner was interested.

"Any more?" he asked.

"Let me think," said T. X., looking up at the ceiling. "Yes, the
interior of his room is plainly furnished, there is a big
fireplace, rather an ornate bed, a steel safe built into the wall
and visible from its outer side to the policeman whose beat is in
that neighborhood."

"How do you know all this?" asked the Chief Commissioner.