For the twentieth anniversary of the start of the Matthew Bartholomew series, Sphere is delighted to reissue all of the medieval monk''s cases with beautiful new series-style covers.

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The winter of 1353 has been appallingly wet, there is a fever outbreak amongst the poorer townspeople and the country is not yet fully recovered from the aftermath of the plague. The increasing reputation and wealth of the Cambridge colleges are causing dangerous tensions between the town, Church and University.

Matthew Bartholomew is called to look into the deaths of three members of the University of who died from drinking poisoned wine, and soon he stumbles upon criminal activities that implicate his relatives, friends and colleagues - so he must solve the case before matters in the town get out of hand...

Rumours of plague threaten Cambridge again, ten years after the Black Death had almost laid waste to the town. Neither the church nor its priests had defended people from the disease and now they turn elsewhere for protection, to pagan ritual and magical potions. It is a ripe atmosphere to be exploited by the mysterious ''Sorcerer'', an anonymous magician whose increasing influence seems certain to oust both civil and church leaders from power.

One murder, another unexplained death, a font filled with blood, a desecreated grave - all bear the hallmarks of the Sorcerer''s hand, only the identity of the magician remains a mystery. One which Matthew Barthlomew must quickly get to the bottom of in order for he and his University colleagues to be free from danger...