Anno Domini 1369. The much loved Queen Philippa lies dying at Windsor & the plague has returned to the city of York. In an atmosphere of fear & superstition rumours spread that a spate of deaths at St Leonards Hospital in York is no accident. The hospital is in debt & has suffered thefts: Sir Richard de Ravenser Master of the Hospital returns from Winchester painfully aware that scandal could ruin his own career. Anxious to avert a crisis he requests the services of Owen Archer spy for the Archbishop. With plague rife & the citys inhabitants besieging his wife the Apothecary for new cures Owen Archer is unwilling to become involved. There is too little to link the victims to each other: the riddle seems unsolvable. But careful enquiries reveal a further riddle connected to one of the victims. Is this where the truth lies?