Believers in the theory of nominalism have set some Cambridge colleges at the throats of those who believe them to be heretics and Michael, the Senior Proctor, has his work cut out to keep the peace. When a nominalist is murdered during a riot Michael is certain he will easily find the killer amongst the Dominicans, but before he can get any sense out of them his junior proctor, Walcote, is found hanged and he discovers that his trusted ally had arranged secret meetings at the St Ragelund Convent between men who would not normally be seen together - and the nuns of St Ragelund are renowned...

Rebellion is in the air of London in the spring of 1663. Thomas Chaloner, spy for the King's intelligence service, has just returned from thwarting a planned revolt in Dublin, but soon realises that England's capital is no haven of peace. He is ordered to investigate the shooting of a beggar during a royal procession. He soon learns the man is no vagrant, but someone with links to the powerful Company of Barber-Surgeons. He master, the Earl of Clarendon, is locked in a deadly feud with the Earl of Bristol, and an innocent man is about to be hanged in Newgate. Chaloner is embroiled in a...

Cambridge University is in dire financial straits: the town's landlords are demanding an extortionate rent rise for the students' hostels and the plague years have left the colleges with scant resources. Tension between town and gown is at boiling point and soon explodes into violence and death. Into this maelstrom comes a charismatic physician whose healing methods owe more to magic than medicine but his success threatens Matthew Bartholomew's professional reputation, and his life ...

It is drawing near to the end of term, and the University at Cambridge is in turmoil over the opening of a new Common Library. There is an attack on one of the masters at a meeting to discuss the matter, and a body is found floating in the pond in the library's garden on the eve of its opening.
Meanwhile, there are rumours of a large force of dangerous smugglers lurking in the Fens. Aided by their friend Sheriff Tulyet, Bartholomew and Michael must thwart the invaders before the Feast of Corpus Christi the following week. To fail might mean the destruction of the town...

In 1358 the fledging college of Michaelhouse in Cambridge is in need of extra funds. A legacy from the Archbishop of York of a parish close to that city promises a welcome source of income. However, there has been another claim to its ownership and it seems the only way to settle the dispute is for a deputation from Michaelhouse to travel north.
Matthew Bartholomew is among the small party which arrives in the bustling city, where the increasing wealth of the merchants is unsettling the established order, and where a French invasion is an ever-present threat to its port. But soon he and...

Five years after Charles II's triumphant return to London there is growing mistrust of his extravagant court and of corruption among his officials - and when a cart laden with gunpowder explodes outside the General Letter Office, it is immediately clear that such an act is more than an expression of outrage at the inefficiency of the postal service.
As intelligencer to the Lord Chamberlain, Thomas Chaloner cannot understand why a man of known incompetence is put in charge of investigating the attack while he is diverted to make enquiries about the poisoning of birds in the King's aviary...