Few are familiar with one of the Holocaust's most monstrous acts, the systematic murder of 5,000 Jewish residents in a Nazi-occupied Polish town, Trochenbrod, on August 11, 1942. Of the 33 who escaped death, only one person remains to describe these events--Betty Gold. Twelve-year-old Betty and her family hid inside a secret wall built by her father and, when it seemed safe, crept toward the forest, which became their home.

In part one of Beyond Trochenbrod, Gold provides a brief history of Trochenbrod, the only all-Jewish town to exist outside of biblical Israel, and...