The Gull Rock Observatory

• Chapter 1 The Salt on the Wind
• Chapter 2 The Ferryman’s Warning
• Chapter 3 Landing at Gull Rock
• Chapter 4 The Ruined Keep
• Chapter 5 First Count of the Puffins
• Chapter 6 The Whispering Cliffs
• Chapter 7 Unearthing the Driftwood Idol
• Chapter 8 High Tide, Low Spirits
• Chapter 9 The First Eclipse
• Chapter 10 Feather and Bone
• Chapter 11 The Covenant in the Clay
• Chapter 12 What the Sea Leaves Behind
• Chapter 13 Voices in the Static
• Chapter 14 The Night of the Red Skerry
• Chapter 15 A Parliament of Birds
• Chapter 16 The Half-Drowned Man
• Chapter 17 Blood in the Burrows
• Chapter 18 The Watcher at the Window
• Chapter 19 Secrets of the Ledger
• Chapter 20 The Rising Silt
• Chapter 21 The Feast of the Deep
• Chapter 22 The Lighthouse Without Light
• Chapter 23 The Tide That Does Not Recede
• Chapter 24 Offering to the Skerries
• Chapter 25 The Great Black-Backed Gull
• Chapter 26 Reclaimed by the Atlantic

The rain in the west of Scotland did not fall so much as it drifted horizontally, a fine, needle-sharp mist that found its way through the seams of supposedly waterproof Gore-Tex and settled in the creases of the skin like grit.

Alasdair Finch stood on the concrete slipway of Mallaig harbor, his hands shoved deep into the pockets of an oilskin jacket that had long since lost its resistance to the weather. He was forty-two, though his joints, currently stiffened by the damp chill of the Minch, suggested fifty. His beard, trimmed short and salted with gray, was beaded with tiny droplets of moisture. He stared out across the gray, churning water toward the jagged outline of the Small Isles, though his real destination lay far beyond them, a mere speck on the maritime charts that most sailors preferred to ignore.

Behind him, the diesel engine of a rusty flatbed truck rumbled to a halt. A door slammed, the metal protesting with a sharp clank, followed by the squelch of heavy boots on wet kelp.

"You haven't changed the boots," a voice said. It was a dry, raspy voice, carrying the flat vowels of Yorkshire softened by a decade of nomadic academic postings.

Alasdair did not turn around immediately. He took a slow breath, inhaling the familiar, pungent cocktail of the harbor: rotting seaweed, diesel exhaust, and the copper tang of gutted herring. "These boots have another three hundred miles in them, Dr. Carter," he said, finally turning.

Dr. Helen Carter stood beside a pile of heavy plastic crates, her hands resting on her hips. She was thirty-eight, with sharp, dark eyes that spent more time analyzing data than looking at people. Her dark hair was pulled back into a practical, ruthless bun, held in place by a plastic hair-clip that looked like it had survived several field seasons in the sub-Antarctic. They had not spoken in four years, not since the disastrous symposium in Norwich where an argument over statistical modeling of guillemot populations had degenerated into a highly public, deeply personal schism.

"The sole on the left one is separating," Helen observed, nodding toward his feet. "You’ll be squelching by Tuesday. And on Gull Rock, a wet foot is a precursor to trench foot."

"I have spare sealant," Alasdair replied, his tone deliberately even. "And it’s good to see you too, Helen. I see the university still funds your penchant for high-end polar gear."

She glanced down at her bright red, commercial-grade flotation jacket. "Some of us prefer to survive the North Atlantic rather than look like a nineteenth-century naturalist who has lost his way. Did you bring the heavy-duty scale?"

"In the blue bin," he said, pointing to a stack of equipment

The vessel that was to carry them across the Minch did not inspire confidence. It was the Maighdean Mhara—the Sea Maiden—though she possessed none of the elegance her Gaelic name implied. She was a thirty-five-foot wooden-hulled crabber, her once-white paint now stained with rust and grease, her deck cluttered with stacks of plastic creels, frayed ropes, and the pervasive, oily stench of a two-stroke diesel engine that had seen far too many winters.

Standing at the helm was a man who looked as though he had been carved from the very cliffs of the Hebrides. Calum MacLeod was sixty, perhaps seventy, with a face lined by decades of salt-laden gales and a beard so thick and yellowed by tobacco it