And his suspicion was accurate enough.

The telegram, it is true, had merely announced Durrance's visit, it had stated nothing of his object; but its despatch was sufficient to warn Sutch that something grave had happened, something untoward in the relations of Ethne Eustace and Durrance.
Durrance had come, no doubt, to renew his inquiries about Harry Feversham, those inquiries which Sutch was on no account to answer, which he must parry all this afternoon and night.

But he saw Durrance feeling about with his raised foot for the step of the trap, and the fact of his visitor's blindness was brought home to him.

He reached out a hand, and catching Durrance by the arm, helped him up.

After all, he thought, it would not be difficult to hoodwink a blind man.