The Ebb Tide

that hour of the morning. A man was singing “Pretty Mary Tumblehome” in a voice like a broken cartwheel, and there was a good deal of low talk, which staggered just a little when walked in. It evened out again when we three trespassers had navigated the tavern and found calmer water in a corridor beyond.

There were a couple of straw pallets along the near wall of the first room off the corridor, and a chamber pot, and boxes of destitute old junk that you might see for sale in a two penny stall in Monmouth Street. Against the far wall stood a heavy oaken wardrobe with a broad, high door, considerably scarred and black with age — nothing that interested us in the least. We jibbed without a word, angling back out into the dark corridor, sailing past other dead-end rooms and none the wiser for any of it. Evidently we had come on a fool’s errand.

“They’ll no doubt find us soon enough,” St. Ives said, shrugging, and he turned back down the corridor with us following, anxious to gain the street — or at least I was. But Hasbro stopped outside the room with the wooden wardrobe, cocking his head as if listening to something.

“Commodious wardrobe,” he said in a low voice.

“Just so,” St. Ives said. “Just so.” He darted a glance up and down the corridor. “Jacky, watch the door,” he whispered. “Give us a whistle if anyone appears.”

But there was no need to whistle, because no one, apparently, was interested in us, a fact that had begun to seem peculiar to me. The entire mob had been aware of our entering the place. Someone, you’d suppose, would begin to wonder what we were about. I looked back to see Hasbro fiddling at the lock with a piece of wire and St. Ives endeavoring to see behind the wardrobe, which appeared to be pressed tightly against the wall, perhaps affixed to it. I wondered why the wardrobe would be locked at all, but just as the question came into my mind, the door swung open to reveal that it was utterly empty.

“Interior lock,” Hasbro said, indicating an iron latch that was attached to the inside of the door, identical to and directly behind the outside latch. There was a key in it, which Hasbro removed and slipped into his pocket.

St. Ives reached in and pushed on the panel at the back of the wardrobe, fiddling with the mouldings, and very shortly the panel slid sideways to reveal a dark passageway beyond. Without an instant’s hesitation St. Ives stepped through the door and ducked into the passage, waving at us to follow. I was quick enough to comply, half of my mind worrying that someone from the tavern would look in to see what we were up to, the other half worrying that they hadn’t already done so.

I glimpsed a precipice ahead — stairs leading downward beyond a small landing, more or less in the direction of the river. St. Ives was already descending along a rusty iron railing. Hasbro followed behind me, swinging the wardrobe door closed, the passage instantly disappearing into utter darkness. I heard him step out onto the landing, and then the panel in the wall at his back slid into place with a clicking sound.

“Steady-on,” St. Ives said from somewhere below.

There was a cool updraft, and a wet, musty smell that might have been the river itself. I heard what sounded like the roar and hiss of a boiler letting out steam. “Can you find your way, sir?” Hasbro whispered into my ear in a disembodied sort of voice.

I told him I could, and I stepped off, one foot in front of the other, gripping the railing with one hand and feeling my way along the wall like a blind man with the other, hoping that no rotten stair tread would catapult me into the abyss. Soon, however, I found that I could see tolerably well. There was light somewhere below, which brightened as we descended.

A vast room — more a cavern than a room — opened out, and we paused for a moment to take in the sight below us. The floor lay at a depth that must have been beneath or near the level of the river. On that floor lay two strange undersea craft set on stocks, one of them evidently half built. Roundabout them lay a litter of metal panels, casks of rivets, and heavy glass sheets in wooden racks. One of the ships was the length of a yacht, and might have been completely built for all I could see in that dim light, with a shape that reminded one of an oceangoing prehistoric monster — finny appendages and convex, eyelike portholes. The other vessel was smaller, just a shell, really, of a similar craft. Some distance away stood a third craft, exceedingly strange and unlikely, a sort of elongated orb standing on bent iron legs — apparently an underwater diving chamber. It had nothing of the diving bell about it, but was altogether more delicate, built of what appeared to be copper and glass, and probably capable of independent movement, if the jointed, stork-like legs and feet were any indication.

A few feet beyond that lay a broad pool of dark water, the lamplight glinting off little eddies and swirls on its otherwise still surface, as if it were flowing eastward, perhaps a subterranean channel of the Thames, or a backwater of one of the underground rivers that transect the city — the Walbrook, perhaps, or a branch of the Fleet.

The ceiling soared away overhead, supported by arches of heavy, cut stone. There were gaslight lamps some distance up the walls, with iron ladders leading up past them to a web of narrow walkways. The walkways ran hither and yon far above our heads, linking platforms on which lay what appeared to be tools and crates, perhaps shipbuilding paraphernalia, too dim in the gaslight to make out clearly from where we stood near the base of the stairs. The platforms, evidently, could be raised and lowered: they dangled from heavy chains that angled away in a complicated, block and tackle system. The boiler and coal oven of an immense steam engine hissed and glowed beyond.

We were apparently alone in the room, and we descended the last few steps warily, the bottom stair-tread hanging a foot above the stone floor, held aloft by heavy chains suspended from above. The entire bottom flight shuddered with our movements like a ship in a cross sea. I was on the lookout for some sort of activity, and a little surprised (I speak for myself again) not to find any, especially with the boiler stoked and glowing. No one with legitimate business in this vast place would have any reason to hide. We were the intruders, after all, just as we had been intruders in the gin shop above.

St. Ives, however, didn’t have the air of an intruder. He stepped down off the precarious stairway and walked eagerly to the half-built ship on the stocks. “A submarine vessel in the making!” he said, his mind instantly taken up with questions of science and engineering. He pointed at slabs of neatly stacked grey stone, weighted down by pigs of iron. The stone looked as if it had been cut out of blocks of sea foam. “Pumice,” he said. “Do you see this, Hasbro? They’ve cut it into slices and encased it within the aluminium shell. Ingenious.” He stood looking for a moment at a tub full of water nearby. Wires looped down into either end of the tub, dangling beneath floating rubber bladders with tubes running out of them. “They’re producing hydrogen gas,” he muttered, rubbing his chin. “I believe they’re pumping it into the shell of the craft to further increase buoyancy. But what motive power? Electricity, surely, but what source…?” He went on this way, peering into recesses of the craft, talking mainly to himself, pointing out incomprehensible odds and ends, apparently having forgotten what we’d come for.

But what had we come for? If we were pursuing the simian man who had failed to steal Merton’s map, we hadn’t found any trace of him. Instead we had found a subterranean shipyard, very nice in its way, but another riddle, not a solution. I looked around warily, my mind far removed from questions of scientific arcana. I’ll admit, craven as it sounds, that I was thinking of the potential for escape. Back up the stairs and into the Goat and Cabbage? The idea was almost welcome. At the downriver end of the cavern, I saw now, stood a pair of high doors, closing off an opening wide enough to cart in any sort of freight — the way in, no doubt. The wardrobe door was simply a bolt-hole.

And then something happened that was almost disorienting under the circumstances: I smelled pipe tobacco, faintly but distinctly. I looked around sharply, peering into the dim and distant recesses of the enormous room, but I saw nothing. My imagination? I heard a scraping noise from somewhere overhead, and I glanced up sharply at the walkways, where I glimpsed the small glowing circle of a lighted pipe. Someone leaned on a railing, looking down at us. He was tall man, I could see that much, and he was evidently in no hurry, but was considering us as if we were animals in a cage, which wasn’t far wrong. The light was too dim for me to make out his features, but I knew well enough who he was. I saw a second man on one of the platforms now, also making no effort to hide.

“There they are!” I shouted, but my words were buried by the abrupt ratcheting, clattering sound of winches turning and of heavy chain hauled through iron rings and the whistle and gasp of steam. The entire system of chains and pulleys and winches seemed to be moving now, the cacophony erupting from far and near. The three of us turned as one back toward the stairs.

But the lower flight of steps was hovering some few feet above the floor, hauling slowly upward on its chains, already moving out of reach. We were trapped, just as I had feared. I realized with a cold start that my feet were wet. There was an inch of water on the floor now. Sluice gates — they had opened sluice gates. The dark river beyond the diving chamber had risen — was rising — and the truth, pardon me for saying it, flooded in upon me. We had been lured here, hoodwinked, the biter bit.