That part of the subject drops. Cantelupe, who has not moved, strikes in again.
Cantelupe. How was Trebell's guilt discovered?
Farrant. He wrote her one letter which she didn't destroy. O'Connell found it.
Wedgecroft. Picked it up from her desk ... it wasn't even locked up.
Farrant. Not twenty words in it ... quite enough though.
Horsham. His habit of being explicit ... of writing things down ... I know!
He shakes his head, deprecating all rashness. There is another pause. Farrant, getting up to pace about, breaks it.
Farrant. Look here, Wedgecroft, one thing is worrying me. Had Trebell any foreknowledge of what she did and the risk she was running and could he have stopped it?
Wedgecroft. [Almost ill-temperedly.] How could he have stopped it?
Farrant. Because ... well, I'm not a casuist ... but I know by instinct when I'm up against the wrong thing to do; and if he can't be cleared on that point I won't lift a finger to save him.