In 2018, Claude Lanzmann, the maker of one of the most monumental cinematic works of all time, died. Although she spent decades in the titan’s shadow, SHOAH editor Ziva Postec was an indispensable part of the project. She dedicated six years of her life, from 1979 to 1985, to constructing the right pace and sequence for 350 hours of footage documenting the “extermination proces...