The water level had risen since Pam climbed down to retrieve the letter. There was a scrape of brickwork and an echoing splash when Louie hit the bottom.
Stevens kicked the heavy lid back into place again, stamped it hard into the surround with a steel-capped boot and hesitated in front of Vince, staring him down, daring him to move. He was tempted to finish the job and face the consequences later. He wasn't afraid of anything Sebastian might threaten him with. But then his bloodlust subsided, and he began thinking practically. He'd done the League a favour. Caton-James had called him to say that Protheroe was bringing something to put the bodies in, but he would not be needed now. Stevens returned to his motorbike and kicked it into life. This night was going to cost Sebastian dearly. They were going to discover that his silence had a painfully high price.
Vince helplessly tried to tear the lid from the drain, but it was too firmly wedged in place now to shift without tools. He darted across the road and hammered on the door of the saloon bar, but no lights came on, no heads appeared at the windows above. Running around the corner, he rang the bell of the first flat he chanced upon. No answer again. Given the late hour and the inclemency of the weather, it was hardly surprising that no one was prepared to open their door to a stranger in the street.
Returning to collect Pam's fallen bag, he removed her mobile phone, walked back to the comparative shelter of the pub doorway and punched out Masters's number. The doctor answered on the second ring, listened to what had happened and promised to call the police immediately.
'I can't get the lid up by myself,' Vince shouted above the drumming rain, 'it's stuck in place.'
'You mustn't panic,' said Masters. 'Let's think this through. In normal weather he'd probably be able to go along to the next valve shaft and surface there, but in this downpour the tunnel may well be flooded all the way to the roof. Jane's calling the police on our other line, Vince. You'd better get away from there fast.'
'I can't just leave them like this. Jesus, they might both be -'
'There's nothing more you can do, is there?'
'Not without equipment, people to help me -'
'Exactly. If you stop now, they'll have suffered for no purpose. You have to keep going.'
'I can't -'
'You can. You say you have the new envelope. Have you opened it yet?'
'No,' he said, 'Jesus Christ -'
'If you don't do it and stay calm, Vince, everything is lost.'
'Okay. Hold on.' He pulled the sopping letter from his pocket, tore off the end and attempted to read the paper inside.
The night of September 3rd and the passing of Proserpine.
A Sunday evening near Sadler's Wells with Diana and her cuckold Actaeon.
Noon at L'Eglise des Grecs in Hog Lane, where a good woman is silent.
Aurora arrives at St Paul's at five to eight, less pious than she appears.
The words had been transcribed with a fountain pen as usual, and were once again in a different hand. It was a wonder the rain had not ruined them. He wondered what effect water would have on the chemical treatment of the paper. Vince read the letter aloud, pausing to allow the doctor time to jot each sentence down.
'I can hardly hear you, the rain's coming down so hard,' he shouted.
'I said I think we have a double bluff here,' Masters told him. 'At first appearance it's quite simple, but no, the more I think about it the more confusing it becomes.'
'Simple?' He could not share the doctor's excitement for the game. It was fine for him; he was warm and dry and safe. Vince just wanted to solve the damned thing and find out what had happened to his friends. His boots were full of water and rain was dripping inside his collar, down his spine.
'This is to do with a set of paintings,' said Masters. 'Hogarth's four famous Times of the Day paintings to be exact, Morning, Noon, Evening and Night. They're right here in London. The problem is, they're absolutely stuffed with allegorical allusions that point in all sorts of different directions. We have too many clues to follow.'
'Couldn't it be simpler than that?' asked Vince, forcing himself to think clearly. 'Surely Sebastian wasn't expecting me to work out the symbolism in paintings at five o'clock in the morning.'
'I think that's precisely what he wants you to do,' replied Masters. 'Don't you see, he's thrusting his preferred kind of education on you, British, classical, old school. And these paintings are games, filled with little puzzles, just the sort of thing he likes.'
'I've seen the Hogarth pictures at the Tate Gallery. Couldn't I be intended to go there?'
'What would be the point of specifying the Hogarth pictures so exactly when any artist exhibited at the Tate would do? And why go into such detail about them? No, the answer has to be in the paintings themselves.'
'Do you have any reproductions of them to hand?'
'I probably have quite a few. They're featured in a great many art volumes. Are you sheltering somewhere out of the wet?'
'No.'
'Listen, you'd better make yourself scarce from there if the police are on their way. It's going to take us a few minutes to locate reproductions of the paintings and examine them. We'll call you back.'
He gave Masters his new number and rang off. With a hiss of exasperation, he stepped back into the drenching downpour.
Louie could feel something cold and wet pressing against him in the icy rushing torrent, something with the heaviness of flesh and bone. It thumped against his burning thigh as the water pounded around him, dragging at his limbs. He reached down into the freezing stream and grabbed a human arm, pulling it nearer. Pam was the worse for wear but still very much alive, and began coughing violently as soon as he raised her head. There seemed to be a stone slab set halfway across the shaft, about two feet down in the water. They were safe so long as they managed to stay on it, as she had; to step off would mean being swept away along the tunnel to who knew where. Forcing one arm around Pam's waist, he used the other to cling to the iron rungs, but had no strength to pull the pair of them free from the churning river.
'Hit my head,' yelled Pam miserably. Louie was so surprised he nearly dropped her. 'Someone let the lid fall on my head. Can't we get out?'
'No, the cover's been put back in place,' he explained. 'Are you strong enough to hold onto something?'
'I think so.'
He gently pushed her through the water to the side wall and wrapped her fingers around the rungs. 'Now hold tight. I'll see if I can get the lid off. Don't let go, whatever you do.'
Slowly, painfully, he climbed the rungs one at a time until his head was level with the top of the shaft. With his free hand he attempted to push the lid free, but there was not even a quarter-inch of movement. His right thigh, where the crossbow dart had entered, felt as though it was on fire. God only knew how many inoculations he would need if they ever got out of here alive.
He stepped down a rung to try and get a better grip, and the aluminium shaft of the dart caught inside one of the ladder struts, causing him to yell out in pain. His fingers closed on air as the rung eluded his grasp, and he fell back. For a moment he lay across the shaft breathing hard, his shoulder against the slime-covered wall opposite. Then as Pam screamed his name he slipped again and fell feet first, bypassing the ledge, into the storm-driven cloacal rage below.
CHAPTER FORTY-THREE
'BUT ARTHUR, we need your knowledge down here,' pleaded Maggie Armitage. 'You still remember all the old, esoteric stuff even I've forgotten.'
'I'm not sure I take that as a compliment,' replied the elderly detective. 'Anyway, there are too many cooks in this room. You need to go over those paintings inch by inch, preferably with a magnifying glass. Someone should be working out what the League of Prometheus is up to.'