The Poisoned Chalice by Bernard Knight

"CSI-12th century" could be the subtitle of this book, as the main character, Crowner John, is the newly appointed Crowner, or Coroner, for the town of Exeter in southern England.  And there are unusual incidents to investigate - bodies found in connection with a shipwreck that show signs of injuries not conducive to drowning, and the rape and murder of two village maidens who have just reached the age for marriage.  Knight provides us with a variety of interesting characters and gives us a clear picture of the rough life of the 12th century.  He includes some plausible detective work on the Crowner's part, given the limitations of the available instruments. An enjoyable read.  388 pages.