When Judith Perle's husband dies the young widow bestows one of her properties a house in the Monk's Foregate on the Abbey of Shrewsbury. The only rent is a single white rose to be delivered annually upon the day of the translation of St Winifred. But as a beautiful woman with a substantial dowry Judith represents a target for would-be suitors & her dowry will be even greater if the house were to revert to her. Someone it seems will stop at nothing to prevent payment of the rose & in the summer of 1142 the rose bush is violently hacked down. Lying beside it the body of a murdered man is discovered. The enquiry into this sensational crime of passion falls as ever to Brother Cadfael.