Meanwhile, he thought, let Sir Chichester pursue his questioning.

He got glimpses through that clouded medium into Jenny Prask's mind.
"You must realise, Jenny, the unfortunate position into which your answers are leading you," said Sir Chichester with a trace of bluster.
Hillyard could have laughed.

As if she didn't realise exactly the drift and meaning of every word which she uttered.

Jenny was not at all perturbed by Sir Chichester's manner.

Her face took on a puzzled look.
"I don't understand, sir." "No?
Let me make it clear! If your mistress never took drugs, if she did not place the glass of chloroform in the particular position which would ensure her death, then, since you, her maid, were alone in this part of the house with her and were the last person to see her alive----" "No, sir," Jenny Prask interrupted.
Sir Chichester stared.