I got up and went back to the balcony, wondering if I should allow myself a cigarette. It had been tough to lock down the need the last couple of days. Watching Irene Elliott at work had been nerve-racking. I forced my hand to relinquish the packet in my breast pocket, and gazed down at Miriam Bancroft, who by now was well on the way to completing her glider. When she looked up, I glanced away along the balcony rail and saw Bancroft's telescope, still pointed seaward at the same shallow angle. Idle curiosity made me lean across and look at the figures for angle of elevation. The finger marks in the dust were still there.