Through a detailed analysis of ghost tales in the Ashkenazi pietistic work Sefer ḥasidim, Susan Weissman documents a major transformation in Jewish attitudes and practices regarding the dead and the afterlife that took place between the rabbinic period and medieval times. She reveals that a huge influx of Germano-Christian beliefs, customs, and fears relating to the dead and the afterlife seeped into medieval Ashkenazi society among...