The Decimal Point
Cecily Marsh had a gift that most people considered a curse: she noticed numbers that didn’t belong.
Not the dramatic discrepancies — those were easy, the sort of thing any junior analyst could spot before their morning coffee cooled. Cecily noticed the quiet ones. The figures that sat just slightly wrong, like a painting hung one degree off true. You might walk past it a hundred times without knowing why the room made you uneasy.
She was eating a desk lunch — a cheese and pickle sandwich, crisps arranged in a neat line beside her keyboard — when she noticed it in the Hartwell Savings accounts ledger.
Zero point zero three pounds. A deduction, applied to one account, dated the fourteenth of last month.
She wouldn’t have looked twice, except that she had, by pure habit, already seen it twice. She scrolled up. There it was again, a different account, same date, same amount. She scrolled further. Again. And again.
Cecily set down her sandwich.
Within the hour, she had compiled a list of two thousand, three hundred and twelve accounts, each missing exactly £0.03. The total was modest — just under seventy pounds. Barely enough to cover a decent lunch in the city. She almost talked herself out of pursuing it.
Almost.
—
The compliance office of Alderton Private Bank occupied the fourth floor of a glass tower near Liverpool Street, and it smelled permanently of strong tea and nervous energy. Cecily brought her findings to her supervisor, Gerald Fitch, who was a kind man with an unfortunate tendency to dismiss anything that didn’t arrive with a flashing alarm attached.
“Seventy pounds?” he said, peering over his reading glasses.
“Seventy pounds across two thousand accounts,” Cecily said, placing her printed summary on his desk. “That’s what concerns me. Not the amount. The pattern.”
Gerald looked at the page the way a man looks at a map when he’s already decided he isn’t lost. “Rounding anomaly,” he said. “System update last quarter, remember? The new payment processor.”
“I checked. The rounding logic was corrected in the update. This happened after.”
He handed the papers back. “File it as a query and I’ll pass it upward if it comes up again.”
Cecily smiled pleasantly and returned to her desk, where she had absolutely no intention of simply filing it.
—
She stayed late that evening, the office emptying around her until she sat alone in the blue-grey glow of her monitor. The question she kept returning to was not the three pence. It was the precision. Someone had set a figure — not a rounded pound, not a percentage, not a fee with any recognisable logic — but exactly three pence. Small enough to be invisible. Large enough, if multiplied across enough accounts, to accumulate.
She pulled the bank’s full account register for the previous eight months and ran her query again.
The total was not seventy pounds.
The total, across eight months, was £1.47 million.
Cecily sat very still for a moment. Then she poured herself a fresh cup of tea from the flask she kept in her bottom drawer, because some discoveries required a moment of civilised pause before one proceeded.
The three pence had been applied at different frequencies to different accounts — sometimes weekly, sometimes fortnightly — all in amounts small enough that no individual customer would raise a complaint, and all flowing, she eventually traced, into a holding account registered to a company called Ferngate Solutions Ltd.
Ferngate Solutions, as she confirmed via the Companies House register, had been incorporated eighteen months ago. Its sole director was listed as a Mr. D. Calloway.
Deputy Head of Payment Systems at Alderton Private Bank: Mr. David Calloway.
—
Cecily did not confront David Calloway. She was an auditor, not a detective, and she understood the difference between finding a problem and solving one. Instead, she compiled a report of extraordinary neatness — twenty-two pages, colour-coded, with a clear executive summary on page one — and sent it that same evening to three recipients: the bank’s Chief Compliance Officer, the external audit partner, and the Financial Conduct Authority’s whistleblower portal.
She also, because she was thorough, saved a copy to a USB drive, which she placed in her handbag beside her library card and a small packet of mints.
—
The following weeks moved slowly for everyone except Cecily, who had a new project on the Pemberton corporate accounts and found it genuinely absorbing. She heard the sounds of an institution quietly turning itself inside out — hushed corridor conversations, unusual visits from senior partners, David Calloway’s desk standing empty by the third Thursday — and she acknowledged them with the mild interest of someone observing weather from a warm room.
Gerald Fitch stopped by her desk one afternoon, looking somewhat ashen.
“The Calloway matter,” he said. “You were right about that.”
“I suspected I was,” Cecily said.
“You sent it directly to the FCA.”
“I sent it to you first,” she said gently. “And then I sent it to the FCA.”
He had the grace to look a little ashamed. “Quite. Yes. Well.” He straightened his tie. “The Chief Compliance Officer would like to have a word with you. She seems rather impressed.”
Cecily had met the Chief Compliance Officer, a sharp-eyed woman named Rosalind Harte, only twice before. “I’ll make time,” she said.
—
Rosalind Harte’s office had a view of the city that Cecily privately thought was wasted on someone who spent most of her time reading dense regulatory documents, which was perhaps unkind, as Cecily spent most of her time doing exactly the same.
“Three pence,” Rosalind said, shaking her head slowly. “How did you find it?”
“I find it easier to say how I find things than to explain why I notice them,” Cecily said. “The pattern was there. Patterns usually are.”
“We’re recommending a formal commendation and a review of your grade.”
“That’s very kind.”
“It’s the least we can do. You recovered one point four seven million pounds.”
“One point four seven three,” Cecily corrected, mildly.
Rosalind looked at her for a moment, and then smiled — a proper smile, the kind that reached the eyes. “Would you consider a move into financial investigations? Permanently?”
Cecily thought about it — the quiet satisfaction of untangling hidden things, of finding the painting on the wall that no one else had noticed was crooked.
“I think I might,” she said.
She accepted a biscuit from the offered tin, chose a digestive, and considered that this was, on the whole, rather a good outcome for a problem that had started with three pence.
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