How could a Jew kill a Jew for religious and political reasons? Many people asked this question after an Orthodox Jew assassinated Israeli Prime Minister Itshak Rabin in 1995. But historian Michael Stanislawski couldn't forget it, and he decided to find out everything he could about an obscure and much earlier event that was uncannily similar to Rabin's murder: the 1848 killing--by an Orthodox Jew--of the Reform rabbi of Lemberg (now L'viv, Ukraine)...