Roland’s hand dropped to his belt for a moment. When he brought it back to the table, he was holding a cartridge in his fingers. He tossed it to Susannah, who caught it. “Do you, sai?” he asked.

“Well enough,” she said, turning in his direction, “to know that you just threw something. To your woman, I think—the one with the brown skin. Something small. What was it, gunslinger? A biscuit?”

“Close enough,” he said, smiling. “You hear as well as you say. Now tell us what you meant.”

“There is another mono,” she said, “unless ’tis the same one, running a different course. Either way, a different course was run by some mono... until seven or eight year ago, anyways. I used to hear it leaving the city and going out into the waste lands beyond.”

“Dungheap!” one of the albino twins ejaculated. “Nothing goes to the waste lands! Nothing can live there!”

She turned her face to him. “Is a train alive, Till Tudbury?” she asked. “Does a machine fall sick with sores and puking?”

Well, Eddie thought of saying, there was this bear...

He thought it over a little more and decided it might be better to keep his silence.

“We would have heard it,” the other twin was insisting hotly. “A noise like the one Si always tells of—”

“This one didn’t make no bang,” she admitted, “but I heard that other sound, that humming noise like the one you hear sometimes after lightning has struck somewhere close. When the wind was strong, blowing out from the city, I heard it.” She thrust out her chin and added: “I did hear the bang once, too. From far, far out. The night Big Charlie Wind came and almost blew the steeple off the church. Must have been two hundred wheels from here. Maybe two hundred and fifty.”

“Bulldink!” the twin cried. “You been chewing the weed!”

“I’ll chew on you, Bill Tudbury, if you don’t shut up your honkin. You’ve no business sayin bulldink to a lady, either. Why—”

“Stop it, Mercy!” Si hissed, but Eddie was barely listening to this exchange of rural pleasantries. What the blind woman had said made sense to him. Of course there would be no sonic boom, not from a train which started its run in Lud; he couldn’t remember exactly what the speed of sound was, but he thought it was somewhere in the neighborhood of six hundred and fifty miles an hour. A train starting from a dead stop would take some time getting up to that speed, and by the time it reached it, it would be out of earshot... unless the listening conditions happened to be just right, as Mercy claimed they had been on the night when the Big Charlie Wind—whatever that was—had come.

And there were possibilities here. Blaine the Mono was no Land Rover, but maybe... maybe...

“You haven’t heard the sound of this other train for seven or eight years, sai?” Roland asked. “Are you sure it wasn’t much longer?”