“The Deplorable End would destroy the whole universe, not just this world,” said the Matriarch, not giving an inch.

“Trust me,” I said. “I have no intention of blowing up the universe. I’ve got a much better idea. If I should fail in my mission . . . then it’s up to you. But for now, trust me . . . Grandmother.”

“Well,” said the Matriarch after a moment. “Just this once, Edwin.”

She actually managed a small smile for me, and I smiled back. And then, as if things weren’t already complicated enough, the ghost of Jacob Drood and the living Jay Drood decided it was time they made their appearance. All the time I was talking with the Matriarch I had the feeling someone was watching me. I finally looked around, and my gaze fell on the Merlin Glass, currently showing a reflection of the War Room. But there was something wrong with the image in the mirror, and when I strode over to study it, I realised there were too many people in it. In the mirror’s reflection, Jacob and Jay were standing behind me, grinning at me over my shoulder. I looked behind me, but there was no one there. I looked back at the mirror, and there they were. It gave me the shivers. Especially when the two of them shouldered past my reflected image, strode forward, and stepped out of the mirror into the War Room. I had to backpedal fast to get out of their way. People jumped and yelled and even screamed, and Jacob and Jay grinned and sniggered and elbowed each other as though they’d just pulled off a particularly clever and childish trick. I had to take a deep breath just to get my heartbeat back to something like normal.

Jacob was now wearing an old-fashioned bottle green engine driver’s uniform, complete with peaked cap, with the front of his silver-buttoned jacket hanging open to reveal a T-shirt bearing the legend Engineers Get You There Quicker. He looked very sharp and focused, with hardly any blue-gray trails of ectoplasm following him when he moved. Jay was back in the full finery of his original period and looked almost as excited as his future ghostly self, but there was something in his eyes . . . I folded my arms across my chest and gave them both my best hard stare.

“Nice trick,” I said coldly. “I’ll bear it in mind for if we ever need to give someone a coronary. I didn’t know you could do that, Jacob.”

“You’d be surprised at what you can do when you’re dead, boy,” Jacob said cheerfully. “It’s really very liberating.”

Jay looked severely at his future self. “I’m boasting again and I do wish I wouldn’t. We have a plan to save the day, Eddie.”

“Of course,” I said. “Doesn’t everyone? Does your plan by any chance involve blowing up the whole damned universe?”