“That a controllable squint is a very valuable asset to a person who wishes to avoid identification.”

“Yes, I did note that. The fellow seemed to think that it was absolutely conclusive.”

“And so would most people; especially in the case of a squint of that kind. We can all squint towards our noses, but no normal person can turn his eyes away from one another. My impression is that the presence or absence, as the case might be, of a divergent squint would be accepted as absolute disproof of identity. But here we are.”

He inserted the key into the wicket of the large gate, and, when we had stepped through into the covered way, he locked it from the inside.

“Why have you locked us in?” I asked, seeing that the wicket had a latch.

“Because,” he replied, “if we now hear anyone on the premises we shall know who it is. Only one person besides ourselves has a key.”