Suddenly my prisoner broke from me and flung himself on the wall. There was a click as if a lever had been pulled. Then came a low rumbling far, far below the ground, and through the window I saw a cloud of chalky dust pouring out of the shaft of the stairway.
Someone switched on the light.
The old man was looking at me with blazing eyes.
'He is safe,' he cried. 'You cannot follow in time ...He is gone ... He has triumphed ... Der Schwarze Steinist in der Siegeskrone.'
There was more in those eyes than any common triumph. They had been hooded like a bird of prey, and now they flamed with a hawk's pride. A white fanatic heat burned in them, and I realized for the first time the terrible thing I had been up against. This man was more than a spy; in his foul way he had been a patriot.