The Fifth Servant: A Novel by Kenneth Wishnia

When a Christian child is found dead inside the business of a Jewish merchant, the city of Prague becomes an even more deadly place for the Jewish people to live. Set during the sixteenth-century Inquisition, sexton Benyamin Ben-Akiva, his rabbinic mentor and a cast of unlikely allies must solve the murder before the anger and blood lust of the city destroy and innocent man and the Jewish Ghetto in which they live. 

This is a smart, historically detailed mystery that will keep you guessing until the very end.