One Fine Day the Rabbi Bought a Cross — Harry Kemelman

On a trip to the Holy Land, Rabbi Small is drawn into a deadly conflict between religious extremists in the New York Timesâ€"bestselling series.

Retired millionaire Barney Berkowitz, from the small Massachusetts town of Barnard's Crossing, invites Rabbi David Small to come to Israel and bar mitzvah him, as Berkowitz never went through the ceremony in his youth. On what should be a joyous occasion -- and an all-expenses-paid trip to the Holy Land -- the rabbi discovers danger lurking in every corner and a conspiracy that threatens to destroy the state of Israel.
 
An innocent American has been murdered and when the sleuthing rabbi begins his investigation, he finds the death may have been part of an international conspiracy fueled by religious radicals and an arms-smuggling scheme. Anyone, from a liberal Jewish-American professor to a young religious fundamentalist, could be a suspect -- and the rabbi must rely on his Talmudic logic and daring chutzpah to untangle the mystery and prevent an even more deadly attack.