It was chiseled from limestone and divided into three sections. To the right, three steps led up to an arched entrance and then an aisle with a bench carved out of the wall. On the left, three other steps led up to an identical aisle and bench. In the middle, a more lofty arched entrance provided access to a long open area, lower than the aisles and visible from the benches. The design was intended to focus attention toward a prominent object on a large square altar at the rear of the central area, and that object – Tess's heart faltered – was a bas-relief statue of Mithras straddling a white bull, slicing its throat. She wanted to scream. Her mind swirled. She feared that she'd go insane.

The statue was twice as large as the one she'd seen in Joseph's bedroom. Its white marble was weathered, cracked, and chipped, and she knew in her soul that this wasn't a copy, as Joseph's had been. No, this was the original. This was the statue that the small determined group of heretics had managed to take with them when they used ropes to escape down the mountain the night before the massacre at Montsegur.

'As I promised,' Fulano said. The truth.'

'Come. Look closer,' Gerrard said. He shifted between Tess and Craig, spread out his arms, and conducted them toward the chapel's central area. Before he entered, he stopped at a basin mounted on a pedestal and dipped his right hand within it. Water glistened on his fingers as he touched them to his forehead, his chest, then his left and right shoulder, making the Sign of the Cross.

But not the cross of Christianity, Tess knew. This cross was that of the sun god.

'A holy-water basin?' Her fear gave way to bewilderment.

'No doubt, it reminds you of Catholicism,' Gerrard said. 'But the ritual predates Catholicism. Like so many of our rituals, this one was borrowed – stolen - from us after Constantine converted from Mithraism to Christianity during the fourth century. After they persecuted us, the hypocrites then pretended that they'd also invented communion, the consecration of bread and wine, the sharing of the sacred meal. But unlike their false religion's bread and wine, which supposedly represents the body and blood of Christ, our bread and wine represents the fertility of, the bounty of, the earth. Similarly this water – which doesn't need to be blessed because simply by being water it's already holy – represents the glory of the rains and rivers that satisfy nature's thirst.'

'Or used to,' Fulano said, 'before poisons in the atmosphere turned the rain into acid. That water comes from a stream in this valley that hasn't yet been polluted.'

They neared the altar. Tess shuddered at the sight of the dog, the serpent, and the scorpion trying to stop the sacrifice that would bring life back to nature. On the left of the dying bull, the blood of which was supposed to fertilize the soil, a torchbearer's flame pointed upward while that of the torchbearer on the right pointed down. Good and evil in conflict.

'So now it's time,' Gerrard said.

Fulano joined them.

The vice president continued, 'I'm sure that despite the carefully constructed sequence of our revelation, the revelation itself is not a surprise. It was obvious to me that when you boarded Air Force Two, you suspected I was one of the heretics – to use the term you prefer – although for us Christianity is the heresy. It was also obvious to me that you suspected that I knew you suspected. So we engaged in word-games, clever dialogues in which each tried to fool the other. But neither of us was convincing. Even so, the things you said affected me, Tess. Your profound environmental concerns, your obvious commitment to the planet. In Washington, when I heard that you threatened us, I agreed with a plan to have you guided toward me so I could personally arrange your death. At José's estate, your execution could easily have been accomplished. However, I'm no longer convinced that you ought to be killed. I see possibilities in your attitude. I think that your passionate skills as a journalist could be a help to us. You feel justifiably furious about your mother's death. As do I. That murder was senseless. Clumsy. Needless. But it happened. It can't be undone. So the question I need to ask is, To preserve your life, are you prepared to subdue your grief and work with us? Think carefully. It's the most important question you've ever been asked.'

'Murder, blackmail, terrorism? Your methods are wrong,' Tess said.

'But they're necessary, since no other methods have been successful,' Gerrard said. 'However, I appreciate your honest response. For the first time, you're not deceptive. You were tempted to lie, given the weapons aimed behind you, but you didn't. Remarkable. Perhaps there's hope, and I really would hate to order your death. You're a vital, healthy, athletic, well-intentioned, young woman – a perfect example of the life force we're trying to save. I'd sincerely regret destroying you.'

Craig coughed.

'You have something to add, Lieutenant? Remember that the only reason you've been tolerated is your romantic association with Tess. If you were killed, she'd never cooperate.'

'Exactly,' Craig said. 'Because we love each other, Tess and I very much want to stay alive. But suppose I manage to forget that I work for NYPD. Suppose Tess manages to forget that you bastards killed her mother.'

Gerrard stiffened. 'Proceed.'

'If we agree to your terms, how would you know we weren't lying? How would you know you could trust us?'

'You've already answered part of your question,' Gerrard said. 'You and Tess love each other enough that you wouldn't jeopardize your future over something you can't control. The plan that our ancestors formulated hundreds of years ago has been achieved. We've infiltrated every major government and corporation, not to mention every important communication network and financial institution. You and Tess could never escape our attention. Our operatives would watch you constantly. You'd be killed the moment you tried to reveal our existence and urge non-believers to move against us.'

Tess couldn't surmount her fear, remembering in turmoil that the night before, Father Baldwin had made the same threat. If you attempt to reveal the secret that the Inquisition never ended, our operatives – constantly watching you – will guarantee your silence. She felt trapped between one side and the other. Good and evil. But which side was good, and which side was evil? Both used similar, vicious, lethal tactics.

'All right,' Craig said. That makes sense. But according to you, I answered only part of the question. What's the rest of it? If Tess and I promise to cooperate, how would you know you could trust us? How could we be confident that we'd be safe?'

'Yes,' Gerrard said. 'How indeed? At this point, I have to defer to José's judgment. My power is limited, even though I'm America's vice president. But José is the direct descendant of the leader of the heretics who escaped from the massacre at Montsegur. He makes the final life-and-death decisions.'

Tess and Craig spun toward Fulano.

The Spaniard narrowed his eyes. 'You appreciated the paintings, the chapels of the animals?'

'Despite my terror, yes. They were unbelievably awesome,' Tess said.

'And you understand their significance?'

'I do,' Tess said. They represent the soul of nature.'

Fulano assessed her. Then despite our differences, we may be more alike than you realize. Perhaps an accommodation can be reached.' He frowned. 'But in order to gain our trust, you need to make a sign of good faith.'

'How do we manage that? What do you mean? What kind of sign?'

'You have to be baptized.'

'What?'

'You need to convert.'

To Mithraism?'

'It's the only way,' Fulano said. 'If you become one of us, if you experience the mystery, if you respond to the powerful rite, you'd never dream of betraying us.'