‘I would like words with you, sir,’ Athelstan murmured, ‘when this business is finished. I shall be waiting for you in St Fulcher’s chantry chapel.’

The anchorite simply darted a look, grasped Fleischer by the arm and took him back to join the others. The procession reformed. Prior Alexander intoned the opening words of the sequence, ‘Dies Irae — Oh Day of wrath, Oh Day of Mourning, See fulfilled heaven’s warning. .’ The sombre sight disappeared into the thick veil of mist. The candle light dimmed, the words faded, nothing but silence. Athelstan sighed, blessed himself and walked back through the murk into the abbey church. All lay quiet. This hymn in stone closed around him, evoking memories of his motherhouse at Blackfriars. Athelstan compared its magnificence with the simple crudeness of St Erconwald’s and felt a pang of homesickness. He would love the likes of Huddle, Watkin and all that boisterous throng to come tumbling through the porch. Athelstan reached the chantry chapel. He went in under the latticed screen with its fretted carving and sat down on a stool staring up at the painted window, marvelling at the sheer subtlety of it all. A demon had been drawn into its intricate tracery. Red stain had first been applied to the blue glass whilst the glowing left eye of the fiend had been formed by simply drilling the actual glass. The devil’s yellow, spiky hair was depicted against a background of flaming red which reflected the very fires of hell.

Athelstan glanced down at the floor. He must concentrate on why he was here. He must summarize what he’d learnt then revise and draft it as he used to before debating a theological problem at Blackfriars.

Item: Sir Robert Kilverby had apparently retired to his chamber hale and hearty. The Passio Christi was safely locked away in its coffer and kept in that chamber.

Item: No one entered that room. Sir Robert certainly never left it.

Item: No poisonous taint or potion could be found in the room, neither in the wine nor the sweetmeats.

Item: The door to that chamber had to be forced. Members of the household, very hostile to each other, had discovered Kilverby’s corpse. They were certain nothing had been interfered with or taken away.

Item: Nevertheless, Kilverby had been poisoned by some slow-acting potion, perhaps the juice of almond seed. Athelstan was well acquainted with that venom — even a few grains were deadly. Traces of a poison had been found on Kilverby’s lips and elsewhere on the corpse.

Item: After Kilverby’s two monkish visitors had left, the Passio Christi was placed back into its casket and made secure. Witnesses had seen the ruby returned to its casket, which Kilverby and Crispin had then taken to the chancery chamber. Kilverby surely would have personally assured himself of the bloodstone’s security? After all, he alone carried the keys on that chain around his neck. He would have certainly raised the alarm if anything was amiss.

Item: Sir Robert Kilverby was a very rich man who’d undergone some form of conversion. He intended to go on a life-time pilgrimage to Santiago, Rome and Jerusalem. All his business affairs would be left to his daughter and her husband. Kilverby’s widow was not his heir, so why should she kill her husband? She profited little except, perhaps, a closer intimacy with her strange kinsman Adam Lestral. Finally, Crispin appeared to be his master’s most loyal servant, who was leaving his service anyway. Kilverby’s secretarius certainly did not profit from his master’s death.

Item: The Passio Christi was, by contract of indenture, to be shown to the Wyvern Company twice a year. Yesterday the Feast of St Damasus was one of those days. However, Kilverby intended the bloodstone to be taken to St Fulcher’s not by himself but his trusted secretarius and beloved daughter. Why? Athelstan squinted up at the devil’s face on the painted window. Kilverby seemingly did not want to meet the Wyvern Company. Had he learnt something highly distasteful about them? That they had sacrilegiously stolen the sacred bloodstone?

Item: Was Sir Robert planning to leave the Passio Christi at St Fulcher’s just before he left on pilgrimage? Was this an act of reparation, for what the Wyverns had done? On the one hand Sir Robert avoided their company but, on the other, he liked to visit this abbey and mingle with its community. Was all this part of Kilverby’s conversion?

‘But in the end,’ Athelstan whispered to himself, ‘Kilverby was poisoned in his own locked chamber with no evidence as to why, how or by whom. The Passio Christi has been stolen, but once more without a scrap of evidence to show how this was done.’

Athelstan rose, stretched and paced up and down the chantry chapel, half aware of the distant echoing sounds. He breathed out noisily. Then there were the murders here at St Fulcher’s. Again, the friar tried to organize his thoughts.

Item: The Wyvern Company had been comfortably lodged here for about four years. Master bowmen, veterans, they had served the late King and his son the Black Prince. Both King and heir now lay cold beneath their funeral slabs. The crown had descended to the Black Prince’s young son Richard, under the care of his uncle the Regent, John of Gaunt, a prince of deep deviousness who wanted that bloodstone.

Item: The old soldiers were lodged here because the Crown generously patronized St Fulcher’s. Moreover, because the Passio Christi was held in trust by Kilverby it was he, not the exchequer, who paid for the sustenance of the old soldiers. However, once all the Wyverns were dead, the Passio Christi reverted to the Crown; Kilverby, or his heirs, receiving a generous grant.

Item: Both the Wyvern Company and Kilverby, whatever they thought about each other, were apparently content with this business arrangement. John of Gaunt, however, was desperate for bullion. Could that arrogant, handsome yet so sinister a Regent be assisting all those with claims on the Passio Christi into the darkness?

Item: Who had killed Hanep and Hyde, two experienced swordsmen caught out in the open and cut down? Had Hyde been killed by one or two assailants? Neither of the slain men had been able to defend themselves. Did this indicate the works of a paid assassin, someone either despatched in from outside or hiding deep within the abbey?

Item: And why had they been killed? They’d apparently not alienated any of their confreres. And why should old comrades turn so viciously on each other? There was certainly no evidence of bad blood between them. . Athelstan paused in his pacing as a group of novice monks padded along the aisle and up into the choir stalls. Athelstan continued his reasoning.

Item: The Lord Abbot with his swan, his niece and the enigmatic Eleanor Remiet, was not exactly a mirror of monastic dedication. Was Isabella Velours his niece or something else? Athelstan was certain she was the former. Moreover, the abbot might be a priest consumed with lusts of the flesh. Some of his monks might frequent the pleasure pots of Southwark but, Athelstan smiled to himself, monks sinned, as did friars. Moreover, just because they were lecherous, did that mean the likes of Abbot Walter were murderers?

Item: More importantly, did Father Abbot go to All Hallows Barking? Was he secretly negotiating with the Upright Men and the Great Community of the Realm? What was really happening at the distribution of Marymeat and Marybread on a Sunday? Then there was Richer, the elegant, sophisticated Frenchman, certainly a man of mystery. Prior Alexander was much smitten with him. Athelstan pulled a face. Such a friendship, like that of David for Jonathan in the Old Testament, was common enough in monastic communities. Richer was the problem. Why was he really at St Fulcher’s? To secure the Passio Christi or was he a spy? Why did he, according to Fleischer, meet boatmen from foreign ships? What did he receive or give to these people?