Another mystery in medaeval cambridge that it requires Brother Michael & Dr Bartholemew to solve. This starts on the day of the inaugeration of a new master of a troublesome college, and bu the end of the day there are 2 very similar deaths to investigate - bu a fast acting poison. So where did the bottles come from? And what has this got to do with an expanded smuggling operation that's causing damage and destruction this winter. It all gets a bit intricate, there's a case of winter fever that turns out to be somewhat sinister, and they get into serious trouble more than once, but come through with the villian identified. We meet Brother Michael's grandmother - a very interesting woman and there has to be something genetic at work there! As usual, some of the minor characters are a bit thin, but the whole hangs together rather well. Overall, pretty good.