Christopher Fowler - Personal Demons

'It's locked. I wonder who has the key.'

Marrick dug about in his pocket and produced a handful of loose Yales. 'Take your pick, there's these and dozens more of the bastards back in the office.' But all of them proved too small to fit the lock.

'The mechanism will probably need oiling, anyway,' said Jonathan. 'We wouldn't be able to shift it by ourselves, not if it's been shut for years.' They resolved to come back down on Monday morning.

London was once settled much lower in the ground. Layers were added; strata of gravel and stone and tarmacadam, layers of bones, the residue of corpses stricken by pestilence and firestorm, three decades of cholera victims, the sickly paupers from debtors' jails and workhouses, the silent majority of the city. Denied a voice in life, how they longed to speak and be heard.

The first tunnel under the Thames was a private enterprise built by Marc Brunel and opened, after considerable loss of life, in 1843. Within fifteen weeks, a million pedestrians had paid a penny each to walk through it, but the novelty wore off fast, and for the next decade the gloomy arched passageways underneath the river became the favoured haunt of thieves and prostitutes.

Jonathan was unable to find a key which would fit, so Marrick asked his foreman Barney to take the door off its hinges. Barney did so that Friday morning, following Marrick's instructions not to go inside. Marrick, who fancied himself as a bit of an Indiana Jones, was determined to retain that privilege for himself. Later on in the afternoon, as the biggest storm of the autumn broke over their heads, Jonathan accompanied his employer back to the cellar, and they crossed the sewage channel to the door in the wall.

Barney had set the square iron panel to one side. Marrick assumed proprietorial charge of the flashlight, and now wielding a crowbar in his other fist, shone his beam ahead into a rubble-filled corridor. Jonathan followed him through, pausing beside a crumpled sheet of newspaper, The Daily Sketch, May 18th, 1949 . He rose, disappointed, hoping to find something older. At least it was dry in here. They had to be under the centre-well of the buildings now. The room he had seen would be above them at the end of the passage and to the right.

'I don't know why I'm fucking wasting my time down here. I should never have let you talk me into this.' Marrick picked his way across the littered floor, leaving Jonathan to fend for himself in the dark. From far above them came the distant rumble of thunder, like masonry being emptied into a skip. Jonathan listened to his boss's muttered complaints, knowing that the merest sliver of hope would drive him forward. 'You never know what we might find,' he said. 'There, at the end, where you just pointed the torch. What is that?'

Twisted curlicues of iron hung from the ceiling. A number of sections had rusted through, and lay on the floor like giant fruit-rinds. Marrick cast the beam upwards. 'Looks like part of a staircase,' said Jonathan.

'Not like any fucking staircase I've ever seen. You reckon this room of yours is above here?'

'There's nowhere else it could be.' He raised his eyes to the stained plaster ceiling and saw the slightly protuberant square of plaster in the corner of the passage. It was half the size of the first door, but large enough for a man to climb through. 'There's your door,' he said excitedly. 'There should be an iron ring set flat in the front section, buried under the plaster.'

'How could you know that?' Marrick stopped and stared back at him through the glare of the torch beam. 'You haven't been down here before.'

'I've read about these things. It's a relic room. Lots of wealthy old houses used to have them. You built a special room, just a small one, and sealed a treasured possession inside, and built the rest of the house around it.'

'Then what?'

'Then nothing. You sealed the room up from the outside and forgot all about it, and the building would have good luck all of its life. It was a pagan thing. By giving up something precious you appeased the household gods. The old Roman habits died hard. Not all Londoners were Christians, you know.'

Marrick's eyes glittered in the gloom. 'So you reckon there's something really valuable in there?'

'There could be, I don't know. They tucked away all sorts of belongings. Gold candlesticks, silver and pewter plate, chalices, they were all popular sacrifices.'

'Reading all them books of yours finally paid off, eh?' Marrick thumped the ceiling square with the end of his crowbar. The plaster coating that covered it sounded thin. A few more thumps rained wafer-fine pieces on to his shoulders. It only took a few minutes to reveal the edges of the door. When he shone the torch back up, they could both see it; a dirty iron ring, recessed into the square. 'Give me a hand here,' said Marrick, thrusting the torch at him. 'Hold that steady.' His fingers followed the outline of the ring and dug around it, pulling it down toward him. As he brought his weight to bear on it, the door grudgingly opened downwards in a shower of plaster fragments.

'Christ, this thing must be on a fucking spring,' Marrick cried, 'I can barely hold it.'

'Do you want me to help?'

'You'd give yourself a hernia. Just grab the bottom corners as soon as you can reach them.' He was right. Jonathan could feel the power of the door as it tried to close itself. Marrick moved the torch to the inside of the hole. Pinpoints of reflected light glittered back. 'There's definitely something in there all right. Keep a hold on the door.'

Marrick braced his feet against the walls and raised his arms into the open hole, pulling himself up. 'Used to – ugh – do this sort of thing in gym,' he gasped through gritted teeth. As his torso, his legs and finally his expensive Italian shoes disappeared into the hole, Jonathan shoved against the door with all his might to keep the heavy spring from slamming it shut.

'What can you see?' he called.

'Hang on a minute, let me get my breath – ' Marrick shone the torch around the room, which was less than five feet square. The air was thick and old, but breathable. His head brushed against the brick ceiling. Beside him at head-height was the tiny window he had seen from outside.

'Plate,' he called down finally. 'Silver plate by the look of it.' He shifted his feet either side of the trapdoor hole. A great mound of the stuff was stacked in a corner. Each piece was twice the size of the average dinner plate. It looked like the municipal tableware they used for mayoral banquets. He bent down and pulled the largest one free in a cloud of strawdust. It was badly tarnished, but he could still make out the leaping stags, the coat of arms, the portrait of some ugly bird in a pointy headdress. His heart was beating faster. Even an idiot could see that this lot was worth a fucking fortune. He turned it over, and there on the reverse was an inscription, hard to read because the S's were substituted with F's, but the date was clear; 1503. Dear God in Heaven, he was rich.

'Here, cop hold of this.' He passed the plate down to Jonathan, who was propped against the trapdoor and had trouble accepting the heavy metal dish. Marrick switched the torch into the opposite corner, no more than two feet behind him. His mouth fell open.

Jonathan's arms were tiring. He was not sure how much longer he could manage to keep the door down. Beyond in the darkness he could hear the steadily augmenting sound of rushing water. The deluge above them was filtering through the pipes of the building and swelling the sewer channel. 'Hurry up,' he called anxiously. 'The storm's bringing a lot of water down.'

Marrick did not hear. He was staring back at a dead body. It was centuries-dead and dried out, so that it appeared as little more than a skeleton with yellow skin vacuum-formed across its bones. It was small, just over four feet high, its head tilted back and its jaws wide open so that it appeared to be laughing, or screaming. There were iron rings around its wrists, manacling it to the wall. They seemed unnecessarily heavy on such a small frame. A chill crept over Marrick as it occurred to him that the poor creature had been chained up alive and left to die here, and that it was most probably a child.