Before us, the choppy silver blue waters of the Golden Horn—the estuary slicing through the European section of the city—stood mere paces from the station. Boats tied too close knocked together down the length of battered docks, only the larger vessels meriting the space to stay safely untouched. One among them waited for us, but I did not pause to identify it, heading instead for the Galata Bridge, making my way through the crush of carriages in the road, Colin’s hand firm on my arm. We paused to pay the toll—a pittance—and walked until we reached the midpoint of the pontoon-supported structure.

“I like being able to see two continents,” I said, watching Colin as his eyes swept the Asian shore far across the Bosphorus from us. “It gives an intrinsic satisfaction I’ve not before experienced.”

“Seraglio Point, on the European side.” Colin nodded towards the shore from which we’d come. “The spires of Topkapı Palace are there”—he pointed—“and farther this way, the Blue Mosque and Aya Sofya.” The minarets of the holy buildings jutted into the crisp sky with mathematical precision, rising from the crowds of smaller stone structures. Gulls circled and dove, careening around the minarets and then pausing to coast on the air, as if catching their breath before darting off again. Trees surrounded the palace, its far-off buildings the only break in a sea of green.

“Topkapı looks marvelous, even from a distance,” I said. “Perhaps I shall be kidnapped and given to the sultan and live out the rest of my years there.” A few paces from me, a fisherman pulled up his line and dropped his flopping catch into an already full bucket. All around us, men were doing the same, and the air fell heavy with the oily, salty scent of their bounty.

“He should be so lucky.” Our eyes met and lingered, and the most pleasant sort of warmth pulsed through me. “But you wouldn’t be—the court is no longer at Topkapı. There’s a new palace.”

“I could stand here all day,” I said. To our north, the neighborhoods of Pera stretched to the hills, and the Galata Tower, the last remnant of a fourteenth-century fort, stood tall above tier after tier of creamy rose-and-white houses.

“I’ve other plans for you.” After bestowing upon me a deliciously discreet kiss that in an instant promised untold delights, Colin led me back to the docks, and in short order we had climbed aboard a small caïque rowed by two sturdy men. They moved with a grace I would not have expected from persons so muscular, pulling through water rough enough to make me wish for the stability of a large ship. As the Golden Horn opened to the wide expanse of the Bosphorus, I began to feel queasy bouncing up and down on erratic waves.

Houses packed the Asian shore as tightly as the European, but as we traveled north, they grew larger—yalıs, mansions built as summer homes for the city’s elite. Some were spectacular, others in distressing states of disrepair, but all came right to the edge of the water, which lapped against terraces perfect for watching the light change as the sun set. Colin had rented one for us that was a vision of romantic perfection: bright white with a peaked red roof and elaborately delicate gingerbread trimwork on the myriad windows, pillars, and balconies gracing the eighteenth-century façade. I stepped, unsteady, off the boat, the fatigue of travel exacerbated by the rough crossing. Nonetheless, I was ready to explore the interior.

The rooms were leagues more refined and elegant than my villa in Greece and entirely different from the sort of luxury I was used to in England. Overstuffed pillows sheathed in silk covered low sofas, and the carpets were soft and spectacular, Anatolian, with designs of leaves and hyacinths twined together, their colors blending beneath an almost translucent sheen. Even pieces that at home would have been fashioned from simple wood were full of exquisite detail: every table inlaid with mother-of-pearl and ebony. An exotic retreat, full of delicious comforts. We collapsed, exhausted, and slept scandalously late the next morning.

“Mail at breakfast?” I asked, watching Meg hand Colin a stack of ivory envelopes as I dropped into a chair on our balcony. “It’s as if we’re still in England.”

“Far from it,” Colin said. I followed his gaze out to the water, where the sun danced across the Bosphorus. Scores of boats glided with breezy ease, showing no hint of the dangerous currents that had wreaked havoc on my stomach the previous day.

“Hmmm. I suppose you’re right.” As if the view were not enough to convince me, trays of decidedly un-English breakfast foods covered the table: thick yogurt drizzled with honey, pomegranate seeds, sliced fruits I did not recognize, sesame-seed-covered pastries filled with cheese and spinach. I cracked the shell of a hard-cooked egg and sprinkled salt over it. “What shall we do today?”

“Sir Richard has written to invite us to the palace this evening. Apparently the sultan is an opera fan. There’s to be a production of La Traviata at his private theater. A Western score, perhaps, but dare I hope the possibility of being one of only a handful of European ladies to meet His Eminence and seeing the interior of Yıldız Palace might be enough to entice you?”

Entice me it did, and before the sun had set, we had made our way across the Bosphorus to the theater. Newly built for the sultan, it was gorgeous, though disappointingly European. European, that is, if one ignored the elaborately carved wooden screens that shielded members of the harem from the view of the rest of the audience. But if a person were to focus solely on the rich velvet curtain and ornately gilded boxes, it would be easy to imagine oneself at Covent Garden. Until, that is, the last act, when strains of Verdi succumbed to something wholly out of place.

“What on earth is this?” I leaned forward.

“Is it Gilbert and Sullivan?” Colin asked as the composer’s tender notes were replaced by a melody far too cheerful for La Traviata. In tonight’s production, Violetta did not die in her lover’s arms after a heartbreaking separation and lengthy illness. Instead, her consumption vanished the moment she drank a potion handily supplied by an obliging physician. “Do you think anyone’s told Verdi?”

“It’s The Mikado.” I leaned close and kept my voice low, breathing in the faint scent of tobacco lingering on his jacket as I tried to ignore a tremor in my core that was dangerously close to erupting in loud laughter.

“Of course. I recognize the song: ‘Here’s a how-de-do!’ Appalling. They’ve usurped Verdi.” Violetta, Alfredo, and this brilliant and mysterious man of science who had made their joy possible joined their voices in an ebullient trio, Mr. Gilbert’s lyrics replaced with ones appropriate to the new and theoretically improved scene.

“Only think what we might accomplish had we access to this sort of miracle cure,” I whispered, flipping my opera glasses closed.

Sir Richard, seated in the row behind us, leaned forward. “The sultan has no patience for unhappy endings. And when one who is the absolute ruler of an empire—a man claiming both secular and spiritual control over people who, technically, are little more than his slaves—has no patience for something, it is forbidden.”

I bit back laughter and glanced across the spectacular theater to the royal box, where Abdül Hamit II sat, nodding, an enormous smile on his face. Next to him was Perestu, the valide sultan—the sultan’s mother—the most powerful woman in the empire. Her petite body still showed signs of the beauty she’d possessed in her youth, and although many of the women in the harem were said to have adopted a Westernized sort of dress, Perestu clung to traditional outfits that were at once elegant and, to European eyes, exotic. Tonight she wore a long, slender dress fashioned from green silk, heavily embroidered with gold thread, wide sleeves hanging over her wrists to her fingertips, a short-sleeved, sheer black robe covering the gown. Her long dark hair hung in two braids down her back, and on her head sat a headdress, reminiscent of a small fez, draped in muslin, an enormous ruby pinned to its front. Rings graced each of the fingers on her henna-painted hands. Her regal bearing surpassed any I’d seen before. Behind the royal pair, four menacing guards stood against the back wall, their thick arms crossed, no hint of amusement on their faces.

“ ‘Here’s a pretty mess! / In a month, or less, / I must die without a wedding! / Let the bitter tears I’m shedding / Witness my distress,’ ” Colin sang under his breath as the applause faded after the curtain fell. “The proper words are much better.”

“Agreed,” I said, slipping my arm through his and dropping my head onto his shoulder as we made our way out of the theater. “I prefer Violetta’s untimely demise to this happy ending.”

“Bloody unromantic of you.”

“I’m a beast, you know,” I said.

“It’s why I married you.” We’d stepped outside, falling behind the sultan and his entourage. The night was warm for spring, the air heavy with humidity and the sweet scent of flowers. Above us, stars dangled, so dazzling bright that I felt certain they could compete with the moon. “Now, if we can just slip away before—”

A ragged, sharp cry pierced the night, and in an instant silence fell over the gay crowd on the theater steps. The garden around us seemed darker, and the stars lost all their brightness. The screaming continued, but now it was accompanied by the sound of slippers on gravel, and I turned to see a beautiful young woman, dark hair streaming behind her in a tangled mess, running towards us.

“Come! Help! Please!” she cried, pausing only long enough to speak, then running again. Before she had covered more than a few yards, two of the sultan’s muscular guards stopped her. She struggled against them, and words that I could not hear were exchanged. Abdül Hamit stepped forward, and she flung herself onto the ground in front of him, all but grabbing his feet as the valide sultan watched. He muttered something, and the girl stood, shaking, not looking directly at him. His words appeared to soothe her, but before she could respond, a circle of guards surrounded him and the group disappeared into the night.

“Need to keep the sultan safe if there’s trouble,” came Sir Richard’s voice from behind me. “He grows more paranoid with each passing day. There’s no one in the empire he’s not having watched.”

“Should that make me feel safe or threatened?” I asked. Perestu had remained behind, taking the girl firmly by the arm and ordering the remaining guards to give her space as we all started down a path lit by a series of gilded torches. They obeyed at once. Colin dropped my arm and went towards them, catching up with a few long strides. I started to follow him, but Sir Richard stopped me.

“What do you think you’re doing? If there’s danger, we must get you back to your house at once.”

“I can’t imagine I’m in the slightest danger here,” I said. “There are guards everywhere.” I set off after Colin as quickly as my evening shoes would allow, frowning when a heel caught in the gravel and my ankle twisted fiercely. All the while I was fighting a stitch in my side caused, no doubt, by my tightly laced corset. I’d expected clothing to be an impediment to honeymoon bliss, but not like this.

Sir Richard caught up to me almost at once and gripped my wrist, a handful of sullen-looking men wearing fezzes trailing behind us. “I won’t let you go alone,” he said. “She’s from the harem. One of the concubines.” I strained to get a better look at the woman, ignoring the pain in my ankle, but she was too far ahead.

“How do you know?”

“It was obvious from her exchange with the sultan. She—” He stopped. We’d reached a small garden. Bright red bougainvillea cascaded from tall stone walls, and an elaborate fountain, carved in the shape of a fish, stood in the center of a smooth marble pavement. The pulse of falling water, soft but insistent, bounced off the walls and warded off the silence that descended upon us as we all froze, horrified at the sight before us.

A body was splayed on the ground, facedown, red gold hair shimmering in the torches’ dancing light, a ghastly contrast to the inhuman stillness of the form. My throat burned and my stomach clenched, the sweet smell of the flowers now cloying. The valide sultan, who was standing next to the woman who’d brought us to this scene, took her hand and led her away, back towards the palace. No doubt she imagined the girl had seen enough. Colin bent down and brushed the hair away from the injured woman’s neck, feeling for a pulse.