A Lighthouse, a Logbook, and a Village That Keeps Its Mouth Shut

There is a particular pleasure in a thriller that trusts its setting to do half the work. The Lantern Room, the third novel from Scottish writer Mairi Colquhoun, takes a premise that could so easily have slid into cliché — a woman alone on a remote headland — and turns it into something far more unsettling. Nell Cargill arrives at Eilean Dorch, a decommissioned light off the Kylearna coast, to spend six months cataloguing keepers' logbooks for a heritage trust. She has her own reasons for wanting to be unreachable, and the novel is in no hurry to tell us what they are.

What she finds in those ledgers is a discrepancy that shouldn't exist: entries in a hand matching the previous keeper's, dated after the night he supposedly drowned. The village below the headland has a tidy version of that story, and it has been telling it for fifty years. Watching Nell pick at the seam of it is the engine of the book.

Why the Atmosphere Genuinely Works

Plenty of novels claim to be atmospheric; this one earns it through specifics rather than adjectives. Colquhoun gives you the smell of paraffin still clinging to a lamp room, the particular rattle of a sash window that won't quite shut, the way damp makes a paperback swell and curl at the corners. Weather is never decorative. Fog does plot work. A gale closes off the causeway at exactly the moment you'd rather it didn't.

The prose is spare and deliberate, with short sentences that tighten as the chapters shorten. Colquhoun uses present-tense interludes — fragments from the old logbooks — to interrupt the main narrative, and they're the best-written pages in the book. They also do something clever: they make you distrust your own reading of the past before Nell has any reason to.

It helps enormously that the author clearly knows this coastline. The village feels inhabited rather than assembled, and the details of island logistics — ferry timetables, a shop that opens when it feels like it, a mobile signal that appears only at the top of one particular hill — are the sort of thing that keeps a reader planted.

The Cast, and Who to Keep an Eye On

Colquhoun is good at people who are polite rather than friendly, which is precisely the register a book like this needs. A few worth watching:

• Nell Cargill — a cool, watchful narrator who withholds from the reader as much as from the villagers. Not always likeable, but always comprehensible.
• Morag Bain — the postmistress who remembers everything and volunteers nothing. The most quietly menacing character in the novel.
• Callum Vane — grandson of the drowned keeper, back on the island for reasons he's vague about.
• Dr Ewart — retired GP, keeper of the village's official history, and far too keen for Nell to stop digging.

The dialogue is excellent throughout. People talk past each other, answer questions they weren't asked, and change the subject with a practised politeness that reads as genuine small-island behaviour rather than authorial withholding.

Where It Loses Its Footing

Honesty first: the middle third sags. There is a subplot involving a land dispute and a proposed fish farm that adds texture but not much momentum, and by around page 190 you may find yourself skimming the planning-meeting scenes to get back to the lamp room. A couple of secondary villagers blur together, and the novel could lose thirty pages without suffering.

Two other small grumbles. The romantic thread arrives late and feels slightly bolted on. And if you like your thrillers to move at a sprint, this one walks — it's a book built on dread rather than incident, and readers expecting a body on every third chapter should adjust their expectations.

How to Get the Most Out of It

This is a novel that rewards a bit of planning, and it suits a particular kind of reading weekend:

• Set aside two or three long sittings rather than reading it in twenty-minute bursts. The tension is cumulative and breaks if you keep putting it down.
• Keep a scrap of paper for the village names. There are enough of them that a quick list saves you flipping back.
• Read the logbook interludes properly rather than skimming them. They carry information the main narrative only confirms much later.
• If you can, read the final hundred pages in one go, ideally in poor weather with the curtains open. It's a book that benefits from a bit of outside noise.
• Pair it with something warm and unfussy — a pot of strong tea, or a decent single malt if you're making an evening of it. Nothing that needs attention.

At around 340 pages, with chapters of four to eight pages, it's a comfortable long-weekend read rather than a single-sitting one. The short chapters are a genuine kindness when you're telling yourself you'll stop at the end of the next one.

The Verdict

The final twist is the thing most reviewers will mention, so let's be careful with it. What matters is that it's earned. Colquhoun plants everything you need in the first eighty pages, in plain sight, and the revelation reframes the earlier chapters rather than invalidating them. That is a much harder trick than it looks, and she pulls it off without cheating or reaching for a coincidence.

If you like your crime fiction slow-burning and place-driven — think atmospheric coastal mysteries, unreliable narrators and communities that close ranks — this will land very well. If you want pace above all else, it may frustrate you. For my money it's the strongest of her three novels, and the one most likely to send you looking for a ferry timetable the following morning.

The Lantern Room is out now in hardback and paperback, and is a good candidate for a book group: there's plenty to argue about, particularly around what Nell chooses to tell us and when.