Ira Einhorn

Ira Samuel Einhorn, known as "The Unicorn Killer", was an American environmental activist and murderer. His moniker, "the Unicorn", was derived from his surname; Einhorn means "unicorn" in German. As an environmental activist, Einhorn was a speaker at the first Earth Day event in Philadelphia in 1970. On September 9, 1977, Einhorn's ex-girlfriend Holly Maddux disappeared following a trip to collect her belongings from the apartment she and Einhorn had shared in Philadelphia, Pennsylvania. Eighteen months later, police found her partially decomposed body in a trunk in Einhorn's closet.