Book 1

A Shameful Murder

by Cora Harrison

Published 29 May 2015

Introducing the Reverend Mother Aquinas in the first of a brand-new historical mystery series.

Cork, Ireland. 1923. When, one wet March morning, Reverend Mother Aquinas discovers a body at the gate of the convent chapel washed up after a flood 'like a mermaid in gleaming silver satin', she immediately sends for one of her former pupils, Police Sergeant Patrick Cashman, to investigate. Dead bodies are not unusual in the poverty-stricken slums of Cork city, but this one is dressed in evening finery; in her handbag is a dance programme for the exclusive Merchant's Ball held the previous evening - and a midnight ticket for the Liverpool ferry.

Against the backdrop of a country in the midst of Ireland's Civil War, the Reverend Mother, together with Sergeant Cashman and Dr Sher, an enlightened physician and friend, seek out the truth as to the identity of the victim - and her killer.


Book 2

A Shocking Assassination

by Cora Harrison

Published 31 May 2016

"Well-drawn characters, including a lead capable of sustaining a long series, complement the clever plot"
Publishers Weekly Starred Review

Ireland. 1924. Reverend Mother Aquinas is buying buttered eggs in the Cork city market at the very moment when the city engineer, James Doyle, is assassinated. Although no one saw the actual killing, a young reporter named Sam O'Mahoney is found standing close to the body, a pistol in his hand, and is arrested and charged.

Following a desperate appeal from Sam's mother, convinced of her son's innocence, the Reverend Mother investigates - and, in this turbulent, war-torn city, uncovers several other key suspects. Could there be a Republican connection? Was James Doyle's death linked to his corrupt practices in the rebuilding of the city, burned down more than a year ago by the Black and Tans? Cork is a city divided by wealth and by politics: this murder seems to have links to both.


Book 3

Beyond Absolution

by Cora Harrison

Published 30 April 2017

Reverend Mother Aquinas must discover who murdered a much-loved priest in the third of this compelling new Irish historical mystery series.

Ireland. 1925. Pierced through to the brain, the dead body of the priest was found wedged into the small, dark confessional cubicle. Loved by all, Father Dominic had lent a listening ear to sinners of all kinds: gunmen and policemen; prostitutes and nuns; prosperous businessmen and petty swindlers; tradesmen and thieves. But who knelt behind the metal grid and inserted a deadly weapon into that listening ear?

The Reverend Mother Aquinas can do nothing for Father Dominic, but for the sake of his brother, her old friend Father Lawrence, she is determined to find out who killed him, and why.


Death of a Novice

by Cora Harrison

Published 31 March 2018

The sudden death of a young novice nun raises a series of puzzling questions in the latest Reverend Mother historical mystery.

The Reverend Mother is delighted with her new entrant to the convent. Young Sister Gertrude is well-educated, has worked for an accountant and has an appealing sense of humour. But one autumn morning, Sister Gertrude is found dead inside a small wooden shed, just beside the river. Surely a young nun could not die from alcohol poisoning?

But when the Reverend Mother delves more deeply into Sister Gertrude's background, she finds some puzzling anomalies. Why did the young nun not delay her entry to the convent until after her sister's wedding? Is it a coincidence that her father died of a similar illness not long before? And could there be a link between Sister Gertrude's death and the gunpowder explosion on Spike Island?

The Reverend Mother must find the answers to these questions if she is to safeguard her community from suspicions of murder.


Murder At The Queen's Old Castle

by Cora Harrison

Published 28 September 2018

A rare shopping trip for the Reverend Mother ends in brutal murder in this absorbing historical mystery set in Cork, Ireland.

Despite its regal name, the Queen's Old Castle is nothing but a low-grade department store, housed within the decrepit walls of what was once a medieval castle, built at the harbour entrance to Cork city. On her first visit for fifty years, the Reverend Mother is struck by how little has changed - apart, that is, from the strange smell of gas . But when the store's owner staggers from his office and topples over the railings to his death, Mother Aquinas is once again drawn into a baffling murder investigation where suspects are all too plentiful.

An unpopular man, Joseph Fitzwilliam had been disliked and feared by all who worked for him. And when the contents of his will are revealed, suspicion widens to include his own family ...


"Harrison's seventh Reverend Mother whodunit stands out as her trickiest yet . Fans of historical puzzle mysteries will be delighted" - Publishers Weekly Starred Review

Money is the root of all evil, according to the Reverend Mother
- but is it the motive for her cousin's murder?

Wealthy widow Charlotte Hendrick had always promised that her riches would be divided equally between her seven closest relatives when she died. Now she has changed her mind and summoned her nearest and dearest, including her cousin, the Reverend Mother, to her substantial home on Bachelor's Quay to inform them of her decision. As Mrs Hendrick's relatives desperately make their case to retain a share of her wealth, riots break out on the quays outside as the flood waters rise ...

The following morning, a body is discovered in the master bedroom, its throat cut. Could there be a connection to the riots of the night before - or does the killer lie closer to home? In her efforts to uncover the truth, the Reverend Mother unearths a tale of greed, cruelty, forbidden passion ... and cold-blooded malice.


A Gruesome Discovery

by Cora Harrison

Published 30 November 2017

The Reverend Mother receives a decidedly gruesome gift in this compelling Irish historical mystery.

Ireland. 1925. Like all who seek charitable contributions, Reverend Mother Aquinas is used to being gifted some fairly dubious items. But nothing like this. On opening the evil-smelling trunk, labelled 'old books', the Reverend Mother is horrified to discover it contains the dead body of one of Cork's richest merchants, wrapped in decomposing animal hides.

Many had reason to loathe the hides and skins merchant: his rebellious, republican son; his frustrated, clever daughter; his neighbours; his business rivals; and those whose unbaptised babies were buried on the site of his new tanning yard. But when suspicion falls on a former lay sister from her convent, the Reverend Mother decides she must help find the real killer.


The peaceful atmosphere of the Reverend Mother's annual retreat is shattered by sudden, violent death in this gripping historical mystery.

1920s. Cork, Ireland. The Reverend Mother regrets the bishop's decision to invite the five candidates for the position of Alderman of the City Council to join them for their annual retreat. Constantly accosted by ambitious, would-be politicians hoping to secure the bishop's backing, she's finding the week-long sojourn at the convent of the Sisters of Charity anything but peaceful. What she doesn't expect to encounter however is sudden, violent death.

When a body is discovered in the convent's apple orchard cemetery, blown to pieces by a makeshift bomb, it is assumed the IRA are responsible. But does the killer lie closer to home? Was one of the candidates so desperate to win the election they turned to murder? Does someone have a hidden agenda? Once again, the Reverend Mother must call on her renowned investigative skills to unearth the shocking truth.


Murder in the Cathedral

by Cora Harrison

Published 6 September 2022

The Reverend Mother's investigative skills are called into action again when one of her young pupils is found murdered at St Fin Barre's Cathedral.

"This series ranks near the top among mysteries with a religious lead" -Publishers Weekly Starred Review

1920s. Cork, Ireland. The Reverend Mother's Christmas Day festivities are shattered when the protestant bishop of Cork arrives at the convent with terrible news: one of the Reverend Mother's pupils, the troublesome seven-year-old Edna O'Sullivan, has been found murdered in St Fin Barre's Cathedral. Furthermore, the cathedral's archdeacon, Dr Hearn, is also dead after succumbing to a suspected heart attack in the middle of a service.

When it is revealed that both Edna and the archdeacon were poisoned, the Reverend Mother is drawn into another puzzling mystery. Was the boy used as part of an elaborate plot to murder the archdeacon? And if so, why was he willing to risk his life to do so? As she investigates, the Reverend Mother makes a series of disturbing and intriguing discoveries. Can she uncover the truth behind these heinous crimes?


The Deadly Weed

by Cora Harrison

Published 7 March 2023

The Reverend Mother's investigative skills are called into action when a local tobacco factory burns down and fingers are pointed at one of her ex pupils...

1920s. Cork, Ireland. Early one morning the Reverend Mother receives news of a deadly fire at the local cigarette factory, a place where she'd been so proud that some of her pupils had been given a steady job. In a city full of poverty, unemployment and political unrest, these ex pupils of hers had surely been blessed with such prospects. Now, though, she is worried . . . What happened at the cigarette factory and why are there rumours circulating that one of her 'girls' was responsible?

Inspector Patrick Cashman is under pressure to quickly find the cause of the fire - and identify a suspect - to placate the visiting Lord Mayor and Commissioner and secure his hopes of promotion. Patrick turns to his friend, the journalist and law student Eileen MacSweeney, for help, along with the ever insightful and calm Reverend Mother. From the fog-ridden streets of the slums to the green pastures and prosperity of nearby Youghal, together they begin to unravel a seedy history of greed, ambition and a desire for power.