The Rise of the Iron Moon. Stephen Hunt

the wine would lift the commodore’s spirits a little; he disliked the massive cellar levels and relied on Molly to ferret out the surplus bottles racked outside of their pantry. She walked up the stairs in search of the old u-boat man. There were eight storeys in Tock House, not counting the basement levels. Molly had once investigated getting a lifting room added onto the outside of the tower-like structure, but the architect she had wheedled into inspecting the building had sadly shaken his head, tapping the walls. Seven feet thick, built after the Jackelian civil war in an age of paranoia. A layer of innocent red brick concealed hard-cast concrete layered with rubber-cell shock absorption sheets. The mansion was a disguised Martello tower, a veritable fortress masquerading as a folly. Masons weren’t going to be knocking through to build additions to this place. Not without the assistance of a volley from the Jackelian Artillery Company.

      Finding the commodore’s rooms empty, Molly continued up the stairs to the highest level of Tock House and sure enough, the old u-boat skipper’s complaints could be heard coming from the chamber that housed the tower’s clock mechanism and Coppertracks’ laboratory. But that was odd … None of the oil lamps in the corridor was lit …

      She found Commodore Black in a room at the back, tugging on the handle of a winch with the help of three of Coppertracks’ diminutive mu-bodies. As the commodore and the drones heaved, the two halves of the dome above were creaking apart, revealing a cloudless, starry night. Molly buttoned up her tweed jacket tightly. No wonder it was so cold and dark up here, their steamman housemate was planning another series of observations on his telescope. Along with the oil lamps, the pipes that carried Tock House’s warming waters from the boiler downstairs were turned off across the top floor.

      ‘Ah, this is no night for your peerings and proddings about the firmament, Aliquot,’ said the commodore.

      Alongside the submariner, Coppertracks’ drones raised cyclopean eyes to the heavens, extending them telescope-like to their maximum length, as if they might help the intelligence that inhabited their bodies in his endeavours of astronomy. ‘I believe our position at the top of Tavistead Hill will isolate us well enough from the firework displays this night,’ said Coppertracks.

      ‘The commodore might have a point, you know,’ said Molly. ‘Fireworks or no, they’re getting ready for a bonfire on the green opposite. When the smoke from that starts to fill the sky, you’re not going to be able to see much tonight.’

      ‘Then let us make haste,’ said Coppertracks. ‘If I were to abandon my work every time you softbodies held a celebration in the capital, I would spend more of the year playing chess against Jared here than I would in achieving anything of scientific merit.’

      Commodore Black finished winching open the dome and eyed the bottle of red wine clutched in Molly’s hand. ‘Now there’s a friend on a cold night like this. Not many of those left downstairs, nor any more likely to come our way. The ingenuity of those that owned the vineyards crushed like their own grapes in the monstrous killing machines the revolution has raised in Quatérshift.’

      Molly watched Coppertracks extend the tubing of his telescope to its maximum length, a clockwork-driven engine doing the heavy lifting. ‘I thought with the new observatory in the Free State at your service, you’d be using your telescope less now?’

      ‘So I had planned,’ said Coppertracks. ‘But last night I experienced a disturbing dream, a visitation from the Steamo Loas, urging me to seek the pattern of the stars in the toss of the Gear-gi-ju cogs.’

      ‘Say you did not,’ said the commodore. ‘Throwing your blessed cogs like dice and shedding oil you can ill afford at your age, murmuring like a gypsy seer.’

      ‘My people ignore the advice of the Steamo Loas at our peril, dear mammal,’ said Coppertracks. ‘Of course I performed the ritual of Gear-gi-ju at the Loas’ urging.’

      Molly had an uneasy feeling about this. After her own communion with the Hexmachina a couple of days ago, a fruitless search for any sign of where her old ally in high adventure, Oliver Brooks, might be now had turned up nothing more than a trail of tall stories in the penny dreadfuls and almost-as-fictional accounts from the lurid crime pages of the capital’s news sheets. The warning from the Hexmachina seemed like a dream. At least, Molly deeply hoped it had all been a bad dream.

      ‘And what did the pattern of your mortal tossed cogs reveal?’ asked the commodore.

      ‘The Eye of Eridgius,’ said Coppertracks. ‘The ancient astronomers’ name for Ashby’s Comet.’

      ‘Is that all? And we are well shot of that, then. Off past the sun, you said. A fare-thee-well until the comet returns in a thousand years’ time.’

      Coppertracks’ telescope swept along the sky, fixing on the position where the comet should be, the steamman’s mu-bodies setting up a table to take notes of their master’s observations. Coppertracks raised an iron finger to tap his transparent skull in perplexity. ‘This is most irregular.’

      Molly moved out of the way of one of his scuttling drones. ‘What is it, old steamer?’

      ‘Ashby’s Comet has disappeared!’

      ‘Maybe that wicked flying star has finally burnt itself out?’ said the commodore.

      ‘That’s not how the mechanics of a comet work,’ chided Coppertracks. He returned to the telescope, placing his vision plate on the rim of the device, swivelling the assembly’s axis across different portions of the heavens. ‘It is not one of your night’s fireworks. Where have you gone to, now, you erratic little—’ Coppertracks emitted a startled fizz of static from his voicebox. ‘This cannot – this is impossible!’

      Coppertracks abandoned the telescope, his diminutive drones already rolling out large tracts of paper on the table behind their master, pencils in their hands, scrawling at a frantic pace – filling the cream vellum emptiness with calculations and equations. Molly pressed her right eye to the telescope. Against the inky canvas sat a tiny crimson dot so small it might as well have been a fleck of brick dust blown off Tock House’s walls.

      ‘You’ve located it again, then?’ said Molly. ‘The comet looks so small now.’

      ‘It should be far smaller,’ said Coppertracks from the table, the fire under his skull-top pulsing with the energies of his vast intellect. ‘And more to the point, the comet should be in a totally different quadrant of the sky.’

      ‘Those calculations you received from King Steam’s new observatory must have been off by a margin, then,’ said the commodore. ‘Sure and it’s happened to me often enough, plotting a course underwater with only the stars and the maths on an old transaction engine to see my u-boat through the straits of the ocean. That’s a shame, but these celestial games of yours seem a complex and deep matter, everything so far away in the darkness with only a polished lens and a length of copper to peer out at them.’

      ‘King Steam himself assisted in my initial calculations,’ said Coppertracks, irate at the commodore’s lack of faith in his people’s infallibility.

      ‘He’s young metal.’

      ‘His body might be young, dear mammal, but his mind is the latest incarnation of a long line of ancient wisdom. King Steam does not make mistakes, and neither do I.’

      The sinking feeling in Molly’s gut was getting worse. ‘It’s coming back towards us, isn’t it?’

      Lifting the equation-filled paper from the hands of a mu-body, Coppertracks scanned the maths, and then nodded. ‘Yes, you are quite on the mark. Ashby’s Comet is returning. Given its present size and position, there is only one explanation that fits the mechanics of the situation. Ashby’s Comet must have used the gravity well of Kaliban to slingshot around the celestial body of the red planet, and, as you say, come back towards us.’

      Molly tried to keep the panic out of her voice. ‘Returning towards us to ram into the Earth?’

      ‘No,’ said Coppertracks, ‘my calculations suggest the comet will not collide with us, but pass near enough