Erich Münter

Eric Muenter, also known as Erich Münter, Erich Muenter, Erich Holt or Frank Holt, was a German-American political terrorist, activist, spy, professor and would-be assassin. Although employed as a German professor at elite American universities, he was actually a spy and a "fanatic in the clandestine service of the Imperial German government." While an instructor at Harvard University, he poisoned and killed his pregnant wife.