1. Klaus Barbie, Butcher of Lyon, as a young officer before he gained notoriety in Lyon. Unknown source.

2. Josef Mengele, Angel of Death. Police photograph, Mengele’s Argentine identification document, circa 1956. Wikimedia Commons.

3. Secretary-General Kurt Waldheim (second from left), pictured with Secretary of State Henry Kissinger, Senator Jacob Javits, and Senator Abraham Ribicoff at a UN conference in Nairobi, Kenya. National Archives and Records Administration.

4. Andrija Artuković, Butcher of the Balkans (center). Artuković hearing, 10 March 1958. USC Libraries, Los Angeles Examiner Photographic Collection, 1920–1961.

5. Karl Linnas, executioner in Estonia. Courtroom sketch drawn during Linnas’s trial for war crimes, circa 1980–81. Courtroom Sketches of Ida Libby Dengrove, University of Virginia Law Library.

6. Project Paperclip team at Fort Bliss, 1946. Row 1: Bernhard Tessmann (second from left), Arthur Rudolph (fourth from left), Wernher von Braun (seventh from right). Row 2: Karl L. Heimburg (sixth from left). Wikimedia Commons.

7. Arthur Rudolph, father of the Saturn V rocket, holding part of a Saturn V model. NASA Marshall Space Flight Center, Huntsville, Alabama. Wikimedia Commons.

8. Kurt Blome, Dachau doctor. Photograph taken when Blome was a defendant in the Nuremberg Medical Case Trial, circa 1946–47. United States Holocaust Memorial Museum, courtesy of Hedwig Wachenheimer Epstein.