Now all the jurors were listening intently. No one moved. No one’s gaze wandered.

“Did the butler call out after you?” Juster also chose his words with exactness.

“Not immediately,” Pitt answered. “I heard his voice from the library speaking in quite normal tones, then he seemed to realize I was not there, and came out to the landing and called me again.”

“So you deduced that he had not seen you leave?”

“Yes. I tried the experiment again, with our roles reversed. Crouched behind the chair, I could not see him leave.”

“I see.” Now there was satisfaction in Juster’s voice and he nodded very slightly. “And why did you go into the room opposite, Mr. Pitt?”

“Because the distance between the library door and the stairs is some twenty feet,” Pitt explained, seeing the stretch of landing again, the bright bars of sunlight from the end window. He could remember the red and yellow of the stained glass. “Had the butler rung the bell for assistance, I would almost certainly have met with someone coming up before I could have made my way out of the house.”

“Assuming you did not want to be seen?” Juster finished for him. “Which had you left rather ostentatiously some fifteen minutes earlier, and then returned through the side door, crept upstairs, and contrived to make murder look like an accident, you would…”

There were gasps and rustles around the room. One woman gave a muffled shriek.

Gleave was on his feet, his face scarlet. “My lord! This is outrageous! I…”

“Yes! Yes!” the judge agreed impatiently. “You know better than that, Mr. Juster. If I allow you such latitude, then I shall be obliged to do the same for Mr. Gleave, and you will not like that!”

Juster tried to look penitent, and did not remotely succeed. Pitt thought he had not tried very hard.