As they are preparing to return to Ireland, Fidelma and Brother Eadulf receive a mysterious summons. Eadulf's childhood friend, Brother Botulf, has requested their presence at Aldred's Abbey at midnight on the old pagan feast of Yule. Fidelma and Eadulf battle against the harsh winter storms to arrive in time, only to find they are too late. Botulf is dead - killed by an unknown hand. As they struggle to comprehend this staggering news, it soon becomes clear that the murder of this young monk is not the only trouble facing the abbey.

Arriving home from a pilgrim voyage, Sister Fidelma hears that her faithful Saxon companion, Brother Eadulf, is under sentence of death for murder. She hastens to the capital of Laigin, where he is being held, determined to appeal against the sentence. The crime took place at the abbey of Fearna, where Fidelma clashes with the sinister Abbess Fainder. The evidence against Eadulf seems overwhelming - can he actually be guilty? Will Fidelma's emotional involvement blind her in her desperate search for the truth? 

Suspicion falls on three dark strangers from the distant land of Aksum (Ethiopia), who are guests at the Abbey of Finbarr. A panic-stricken mob attacks the abbey, leaving the religious in fear for their lives. Sister Fidelma and Brother Eadulf are called in to restore order and find the killer, but it soon becomes clear that the three mysterious strangers are hiding a dark secret. And what about the ageing Laig, a hermit-like apothecary, who is known to have instructed all three victims about the magic and power of the moon....

Hemlock at Vespers is Peter Tremayne's anthology of Celtic mysteries featuring the ever-popular 7th-century super-sleuth Sister Fidelma. Sister Fidelma originally made her debut as one of the decade's most interesting sleuths in short story form. The sharp-witted and astonishingly wise religieuse captured the hearts of many as she successfully tackled the most baffling of crimes in her other role as advocate of the law courts of Ireland, using the ancient Brehon Law system. 

When Sister Fidelma sets out on a pilgrimage in the autumn of AD 666, her main preoccupation is to reflect on her commitment to the religious life and her relationship with the Saxon monk, Eadulf, whom she has left behind. Complications arise during the first night on the ship when one of the pilgrims is apparently washed overboard. The discovery of a blood-stained robe raises the question of murder, and Fidelma finds herself having to focus all her abilities on solving the mystery.  

The Abbey of Imleach, in the southwest Irish kingdom of Muman, now rivals Armagh as the centre of the faith in Ireland. For the founder of the abbey was none other than St Ailbe, the man who brought Christianity to Muman, converted its king and baptised him at Cashel in AD448. But now, calamity has struck the community of the abbey. Not only has an elderly monk suddenly disappeared, but the holy relics of St Ailbe have also vanished. These sacred relics are not just the concern of the abbey's community but are a priceless icon and political symbol of the entire kingdom....

A servant has been murdered and the baby in her charge abducted. Fidelma of Cashel has solved even more horrendous crimes in her career as an advocate of the ancient Brehon Courts of Ireland. But this case is different. For both Sister Fidelma and her companion, Brother Eadulf of Saxmund's Ham, the case is unique because of the personal emotions involved. The baby who has been abducted is their own son. What is the motive for their crime? Could someone seeking vengeance on Fidelma and Eadulf have done the deed? They have made a lot of enemies in their pursuit of justice.   

On a storm-driven night, wreckers drive a ship onto rocks off the coast of Ireland. An Abbess leading a pilgrimage is killed and the young religieuse with her abducted. An aging scholar is murdered in the Abbey of Ard Fhearta. Do these events have a connection? Sister Fidelma and Brother Eadulf go to Ard Fhearta to examine the mystery. But the abbey stands in the territory of the Uí Fidgente, enemies of Fidelma and her brother, the King of Cashel, and danger threatens Fidelma and Eadulf from the moment of their arrival. What is the link that connects the crimes?

Ebert is not a man to make enemies. He is a chieftain with a reputation for kindliness and generosity. Yet, one night, his household is aroused by a scream from his chamber. The servants burst in to find Móen, a young man to whom Eber had extended his protection, crouched over the bloody body of the chieftain. Móen's clothes are drenched in Eber's blood, and he is clutching a bloodstained knife in his hand.There seems no doubt of culpability, but why did Móen kill the gentle and courteous Eber?

Ireland, AD 671. The Great Fair of Bealtain is almost upon the fortress of Cashel, and a line of painted wagons carries entertainers to mark the occasion. But preparations take a deathly turn when one carriage is set alight, and two corpses are found, lying poisoned, within. As Sister Fidelma and her companion, Eadulf, investigate, they are plunged into the menacing marshlands of Osraige - where the bloody origin of the Abbey of Cainnech is wreaking his revenge.  

In the mid-7th century AD, the Venerable Dacán, a much respected and beloved scholar of the Celtic Church, has been found murdered while on a visit to a remote abbey in the Irish Kingdom of Muman. When Dacán's foul death is used by a neighbouring kingdom to demand reparation from Muman, bloody war seems imminent. Summoned by Muman's dying king to investigate, Sister Fidelma is asked to solve the mystery of the brutal killing and by doing so to prevent the inevitable war breaking out between the two opposing kingdoms.

It is AD 670, and Bishop Leodegar has called the church leaders together for an emergency meeting. But a fierce row breaks out, and the assembly descends into chaos. Later that evening one of the delegates is discovered murdered, his skull brutally smashed. Sister Fidelma and her companion, Brother Eadulf, unwittingly find themselves in the middle of a shocking murder investigation involving the most powerful religious leaders in the land. The disappearance of women and children and rumours of a slave trade indicate malevolent forces at work. 

Ireland. AD 671. Sister Fidelma has a mission, and she is sworn by oath to reveal her purpose to no other. The secret investigation leads Fidelma and her companions to the abbey of Finnbarr to question the abbot. But before they have a chance to speak to him, the abbot is found murdered - and the young girl suspected of the crime has fled the scene. Despite their protests, Fidelma's cohorts agree to accompany her in pursuit of the girl for answers.

Ireland, AD 671. King Colgú of Cashel is shocked to learn that his loyal Chief Bishop and advisor has been murdered in the old enemy fortress of the Uí Fidgente. When word reaches Cashel that the culprit will be executed under new law, a larger conflict threatens. Dispatched to investigate, Sister Fidelma and her companion, Eadulf, discover that the man facing punishment is Gormán - commander of the King's bodyguard. But Fidelma cannot believe Gormán would carry out such an act - and yet he was found locked in a chamber with the body, weapon in hand.

Ireland, AD 671. On the eve of the pagan feast of Samhain, Brother Eadulf and the warrior Aidan discover a man murdered in an unlit pyre in the heart of Cashel. He has been dressed in the robes of a religieux and killed by the ritualistic 'three deaths'. When a strange woman known as Brancheó appears in a raven-feather cloak foretelling of ancient gods returning to exact revenge upon the mortal world, she is quickly branded a suspect. But in their search for the killer, Sister Fidelma and Eadulf will soon discover a darker shadow looming over the fortress.