I gasped. “Thomas! She’s walking!”

His face was buried in the curve of my neck. His hand covered my breast.

“Thomas,” I said, shoving him away. “Look.”

He backed off, annoyed. His eyes were nearly black behind his glasses, and even though he didn’t say anything, I could hear him clearly: How dare you? But then Jenna tumbled into his lap, and he scooped her up and kissed her forehead and each cheek. “What a big girl,” he said, as Jenna babbled against his shoulder. He set her down on the ground, pointing her in my direction. “Was it a fluke or a new skill?” he asked. “Should we run the experiment again?”

I laughed. “This girl is doomed, having two scientists as parents.” I held out my arms. “Come back to me,” I coaxed.

I was speaking to my daughter. But I might as well have been pleading to Thomas as well.

A few days later, when I was helping Grace prepare meals for the Asian elephants, I asked her if she ever argued with Gideon.

“Why?” she said, suddenly guarded.

“It just seems like you get along so well,” I replied. “It’s a little daunting.”

Grace relaxed. “He doesn’t put the toilet seat down. Drives me crazy.”

“If that’s his only flaw, I’d say you’re incredibly lucky.” I raised a cleaver, chopping a melon in half, focusing my attention on the juice that bled out of it. “Does he ever keep secrets from you?”

“Like what he’s getting me for my birthday?” She shrugged. “Sure.”

“I don’t mean those kinds of secrets. I mean the kind that make you think he’s hiding something.” I put down the knife and looked her in the eye. “The night the calf died … you saw Thomas in his office, didn’t you?”

We had never talked about it. But I knew Grace must have seen him, rocking back and forth in his chair, his eyes empty, his hands shaking. I knew that was why she had refused to leave Jenna alone with him.

Grace’s gaze slid away from mine. “Everyone’s got their demons,” she murmured.

I knew, from the way she said it, that this was not the first time she had seen Thomas that way. “It’s happened before?”

“He always bounces back.”

Was I the only person at the sanctuary who didn’t know? “He told me it was just once—after his parents died,” I said, my face hot. “I thought marriage was a partnership, you know? For better or for worse. In sickness and in health. Why would he lie to me?”

“Keeping a secret isn’t always lying. Sometimes it’s the only way to protect the person you love.”

I scoffed. “You only say that because you haven’t been on the receiving end.”

“No,” Grace said softly. “But I’ve been the one who keeps the secret.” She began to shovel peanut butter into the empty bellies of the halved melons, her hands quick and practiced. “I love taking care of your daughter,” she added, a non sequitur.

“I know. I’m grateful.”

“I love taking care of your daughter,” Grace repeated, “because I’m never going to have one of my own.”

I looked at her, and in that moment, she reminded me of Maura—there was a shadow in her eyes that I’d noticed before, that I’d chalked up to youth and insecurity, but that actually may have been the loss of something she never really had. “You’re still young,” I said.

Grace shook her head. “I have PCOS,” she clarified. “It’s a hormone thing.”

“You could get a surrogate. You could adopt. Have you talked to Gideon about the alternatives?” She just stared at me, and I understood: Gideon didn’t know. This was the secret she had been keeping from him.

Suddenly Grace grabbed my arm, so tightly that it hurt. “You won’t tell?”

“No,” I promised.

She settled, picking up her knife again to start cutting. We worked in silence for a few moments, and then Grace spoke again. “It’s not that he doesn’t love you enough to tell you the truth,” she said. “It’s that he loves you too much to risk it.”

That night, after Thomas slipped into the cottage after midnight, I pretended to be asleep when he poked his head into the bedroom. I waited until I heard the shower running, and then I got out of bed and walked out of the cottage, careful not to wake Jenna. In the dark, as my eyes adjusted, I ran past Grace and Gideon’s cottage, where the lights were off. I thought of them twined together in bed, with an infinitesimal space between them at every point they touched.

The spiral staircase was painted black, and I banged my shin against it before I realized I had already reached the far edge of the African barn. Moving silently—I didn’t want to wake the elephants and have them send out an inadvertent alert—I crept up the stairs, biting my lip against the pain. At the top, the door was locked, but one master key opened everything at the sanctuary, so I knew I’d be able to get inside.

The first thing I noticed was that, as Thomas had said, the moonlit view was remarkable. Although Thomas hadn’t installed the plate-glass windows, he had cut out rough openings and covered them with a sheet of clear plastic. Through them, I could see every acre of the sanctuary, illuminated by the grace of the full moon. I could easily imagine a viewing platform, an observatory, a way for the public to see the amazing animals we sheltered without us having to disturb their natural habitat or make them part of a display, like they’d been in zoos and circuses.