No, she must never know, and if Rupert discovered the truth, he, Olva, must force him, for his sister's sake, to keep silence.

But if Rupert knew he would tell his sister, and she would believe him.

No use denials then.
And on the side of it all was the Shadow, with him now, with him in the room.
All things betray Thee Who betrayest Me.
The line from some poem came to him.

It was true, true.

His life that had been the life of a man was now the life of a Liar--Liar to his friends, Liar to Margaret, Liar to all the world--so his shuddering soul cowered there, naked, creeping into the uttermost corner to escape the Presence.
If only for an hour he might be again himself---might shout aloud the truth, boast of it, triumph in it, be naked in the glory of it.