Mistress of the Art of Death by Ariana Franklin

Set in England in 1171, four children have been brutally murdered.  The townspeople blame the Jews, who are placed under the protection of King Henry II for their own safety.  Because the king needs the taxes paid by the Jewish merchants, he asks his cousin, the King of Sicily, for help, because the best medical doctors in Europe are some of his subjects and include an early form of medical examiner.  But he sends Adelia, who is viewed with suspicion everywhere she goes.  It is a fascinating story of superstition, prejudice, and intolerance.  I rate it 4 out of 5.  This is my 4th book for the New Author Challenge.