“I was just thinking,” she said. “There are so many crazy problems in the world. Like, I was just reading that we could be seeing the last of the bees in North America soon. And if that happened, food webs would just collapse, and tons more people would starve. But suppose you had the power to change things? You still might not be able to fix anything, because every time you solve a problem you’d cause another problem. And maybe all these plagues and droughts are nature’s way of striking a balance? We humans don’t have any natural predators left, so nature has to find other ways to handle us.”

Reginald had tattoos all over his pale torso, one for each species of insect he had discovered across the Americas. These insect drawings resembled something out of a Victorian naturalist’s handbook, with just splashes of color here and there. As Reginald’s body had changed, his loose folds of skin and potbelly made it appear as though the locusts and butterflies were flexing their wings and twitching their heads. His pecs were all wasps, his arms sleeved with shiny chitinous beetles.

“I am, as you know, a fan of nature,” said Reginald. “And yet, nature doesn’t ‘find ways’ to do anything. Nature has no opinion, no agenda. Nature provides a playing field, a not particularly level one, on which we compete with all creatures great and small. It’s more that nature’s playing field is full of traps.”

In the end, she stopped just short of curing Reginald outright. Just like always.

*   *   *

PATRICIA DREAMED SHE got lost in the woods, like she had when she was a girl. Stubbing her toes on roots, skidding on dead leaves, feeling transported by the cavelike scent of damp earth. Clouds of insects in her eyes, and up her nose. She laughed so hard she snorted dead bugs, for joy at being out of the city at last. And then she wandered into a clot of thornbushes, which tore at her skin and clutched so hard she couldn’t go forward or backward without shredding, and her giddiness turned to anxiety, because what if people needed her help? Or the other witches? What if she was going AWOL right when someone was in trouble?

The more she tried to force her way out of the bracken, the harder it tore at her, until she realized that this was her dream, and she could always fly in dreams. She lifted up out of the thicket and flew up, along a steep incline that was studded with roots. And then it came into view: huge and dark, like a raven formed of branches and leaves. A huge ancient Tree, filled with patience and enough memories for a billion rings, twin branches undulating as in greeting.

*   *   *

“SO WHAT WAS the thing you couldn’t tell me about over the phone?” Laurence asked as he brought their espressos from the counter.