“He is also guarded. I can find him on the street, and his name is carried with him, so he hasn’t parted with that part of his heartfire. Nevertheless, he has no knowledge, no memory of where he takes the knotwork and whom he gives it to. There are blank places in his memory. As soon as he leaves the docks with a basket of souls, he remembers nothing until he wakes up again. I could follow him, with eyes instead of doodlebug”

No! No, don’t go near him! We know nothing of the powers at work here. Stay away and cease to search. Who knows but what some part of yourself goes forth from your body, too, when you do your torching? If you were captive as well it would be too much for me to bear.

“We are all captives, aren’t we?” she wrote. “Even the baby in my womb.”

She is no captive. She is home in the place she wants most to be.

“She chooses me because she knows no other choice.”

In due time she’ll eat of the fruit of the tree of knowledge of good and evil. For now, she is in the garden. You are paradise. You are the tree of life.

“You are sweet,” she wrote. “I love you. I love you.”

His own love for her swept over him, filling his eyes with tears and his heart with longing. He could see her set down the pen. No more words would appear on the paper tonight.

He lay there, sending forth his doodlebug. He found Purity easily. She was awake in her cell, weeping and praying. He stifled the vindictive thought that a sleepless night was the least she owed him. Instead, he entered her body and found where the fluids were being released that made her heart beat faster and her thoughts race. He watched her calm down, and then kindled the low fires of sleep in her brain. She crawled into bed. She slept. Poor child, he thought. How terrible it is not to know what your life is for. And how sad to have found such a destructive purpose for it.

Verily Cooper left Arthur Stuart, Mike Fink, and John-James Audubon in a small clearing in a stand of woods well north of the river and far from the nearest farmhouse. Arthur was making some bird pose on a branch—Audubon discoursed about the bird but it never made it into Verily’s memory. It was a daring thing he was going to try. He had never knowingly attempted to defend a man he knew was guilty. And Alvin was, under New England law, guilty indeed. He had a knack; he used it.

But Verily thought he knew how witch trials were run. He had read about them in his mentor’s law library—surreptitiously, lest anyone wonder why he took interest in such an arcane topic. Trial after trial, in England, France, and Germany, turned up the same set of traditional details: curses, witches appearing as incubi and succubi, and the whole mad tradition of witches’ sabbaths and powerful gifts from the devil. Witchers asserted that the similarity of detail was proof that the phenomenon of witchcraft was real and widespread.