"I can't." Tom's face was unreadable.
"Even with the potential repercussions? Why not? Do you want to see us suffer?"
Tom rounded on him furiously. "Of course not! I can't tell you because there's too much that might be changed."
"How long have you known?"
"I've always known."
"Always?"
"Always. And if you'd been paying attention, you would have known too."
The words were like a slap to the face. In the space between seconds, a million memories flashed across his mind as he turned over everything he had seen and heard over the previous months. Had he missed something? Had he screwed up again? "I guess I'll know soon enough," he said with bitter resignation. "I just hope you can live with yourself when it comes out."
The tunnel followed an undulating path, the changes in the air pressure telling Church it regularly ran under the river. He had taken to holding the Wayfinder permanently aloft so the walls were painted with a sapphire wash. The tiny blue flame gave him a measure of encouragement in that dark place, and raised the spirits of Tom and the Bone Inspector too. The flame pointed dead ahead.
"Why didn't it lead us to the head before?" Church asked.
"Because it is responding to what you hold in your heart," Tom replied.
"It's alive?"
"As much as anything can be said to be alive, yes."
When they'd been walking an hour or more, the Wayfinder flame began to grow brighter. At the same time, the unnerving background beat became rapidly louder. Within ten minutes it was coming through the walls all around-BADOOM, BA-DOOM-a war drum marking their passage to disaster.
Two and a half hours later, the tunnel rose up, while at the same time becoming more formed, with props and stone lining the walls. The Wayfinder's flame had started to point away from the main route of the tunnel so that when they came to a large oaken door Church was prepared for it.
"Looks like we're here," he said. The door was locked, but Caledfwlch sliced through the rusty iron mechanism easily. Church looked around at the others. Tom and the Bone Inspector were grim faced, the Tuatha De Danann impassive, Niamh concerned and colourless; they all nodded.
He yanked open the door.
It felt like they had walked into a foundry. After the chill of the tunnel, the heat was stifling, the air suffused with the smell of acrid smoke that caught the back of their throats. The thunder of Balor's heart was almost deafening.
The stone walls and flagged floor suggested they were somewhere in the lowest level of the Tower of London. The Bone Inspector breathed deeply, despite the atmosphere. "Can you feel it? Ancient power, even though those bastards have tried to pervert it. I haven't been here for years-too many people. Should have come back sooner." He looked at Church. "This place was sacred long before they threw up this mountain of stone over the top of it. If any place can be called the heart of the country, it's here."
The Tuatha De Danann set the chest containing the Wish-Hex down in the middle of the room. "What is in that box?" Church said mockingly. Nuada's lieutenant didn't reply, didn't even acknowledge he had spoken. Church caught Niamh's eye as he turned back to the others and she gave him a secret nod. "We need to move quickly," he continued. "They might already know we're here-"
"The Wayfinder will blind Balor's perception to you, at least for a while," Tom said. "And if you hadn't brought the energy flow back to life at St. Michael's Mount you wouldn't be here at all."
Church made to follow the lantern's flame until he saw the Tuatha De Danann were not moving. "We shall wait here," Nuada's lieutenant said.
"I'd say we've got even less time than we thought," Church said under his breath to Tom and the Bone Inspector as they left the room.
The seething heat had them all red-faced and soaked in sweat before they had got very far along the maze of once-dank corridors. Church had visited the Tower before and had never seen any sign of that area, so he guessed it must lie beneath the zone normally open to the tourists. He had the Sword at the ready, but the entire lower level was deserted.
"They're all up top throwing rocks at the boat," the Bone Inspector said, but Church wasn't convinced.
The Wayfinder led them to a short corridor that ended in a dead end. At first sight there was nothing out of the ordinary, but then Church allowed his perceptions to shift until he could see the lines of Blue Fire running through the stone like veins, converging into the circular design of a serpent eating its own tail. He steeled himself, then placed his hand hard on the pattern. The wall ground open to reveal a shaft plunging down into the earth, the bottom lost in shadows.
The Bone Inspector leaned in to inspect it. "There are handholds cut into the stone." He tucked his staff into the back of his shirt and levered himself over the lip. "Don't know why they made these things so bloody lethal. One slip and there'll be a mess on the floor."
The Bone Inspector had disappeared from view and Tom was just about to follow when they heard the faintest sound behind them. They spun round to find the corridor filled with Fomorii. And at the head of them was a frantically fluttering mass of crows.
Church had sheathed Caledfwlch to open the doorway, but it was back in his hand in an instant. Before the first Fomorii could move, he was advancing quickly, swinging the Sword back and forth in an arc. His target was Mollecht, the leader, the most powerful. Faced with the enemy, the Sword was even more alive in his hands than he recalled. Its subtle shifts of weight forced his hand in different directions to make the most exacting of strikes, while at times he felt it squirm so hard it almost leapt from his fingers.
But before he had gone three paces, the Fomorii had closed around Mollecht to protect him. They were obviously aware of Caledfwlch's abilities, but they showed no sign of self-preservation at all. Church carved through them as they flooded forwards ceaselessly, the bodies falling then shrivelling to nothing at each cut of the blade.
Sweat rolled off him as he hacked and lunged in the sweltering heat. Eventually he began to make some headway. Soon he could see Mollecht once more, directing the Fomorii silently. It was enough to drive him to renew his efforts. He hit one high, spun round and caught another low, and then took out three with one blow. And then Mollecht stood before him once more.
But the hideous creature was prepared. As the final Fomorii fell away, Church saw the birds moving aside to open a hole that revealed the entity inside; his mind was as unable to accept it as the first time he had witnessed it at Tintagel. The energy inside the hole was already swirling and on the brink of erupting.
Tom thrust Church out of the way. The blast hit the Rhymer full on and within a second the blood was starting to seep through his pores. Church had no time to help. The Sword was tugging at his hand, as aware of the opportunity as Church himself. Mollecht had drained himself. It would be a moment or two before he had the strength to make another attack, or even to defend himself. The hole was already closing. Church drove the Sword horizontally towards the centre of it. The creature would be skewered, finally.
The dark shape exploded out of nowhere. Church only caught the briefest glimpse out of the corner of his eye before it slammed into him with force, knocking him to the hard stone floor. Caledfwlch went flying from his grip.
"Do I have to do everything round here?"
The voice stunned Church just enough to hamper his reactions, and by that time a figure had jumped on to his chest, pinning his arms over his head. He found himself looking up into the monstrous black-veined face of Callow. He was gloating in every fibre of his being.