A survivor kept the key from a German synagogue destroyed on Kristallnacht. 86 years later, the relic is returning home.

Cantor Jennifer Bern-Vogel was used to hearing her mother tell the story.

On the evening of Nov. 9, 1938, her mother, then Marianne Katzenstein, who was 16 at the time, was in her family’s synagogue in Bielefeld, Germany,…