![Contagion](https://doomovies.net/wp-content/uploads/2020/03/kbC6I0AOSLTHFA2dieyat9h8QHP-185x278.jpg)
Kurt Gerstein—a member of the Institute for Hygiene of the Waffen-SS—is horrified by what he sees in the death camps. he is then shocked to learn that the process he used to purify water for his troops by using Zyklon-B, is now used to kill people in gas chambers.