Robert Christian Hansen (born on February 15, 1939 in Estherville, Iowa) is an American serial killer. Between 1980 and 1983, Hansen murdered between 17 .br Robert Christian Hansen is an American serial killer. Between 1980 and 1983 in Alaska. The prostitutes he kidnapped were released into the Alaskan .br Robert Hansen, Alaskas Serial Killer Crime Documentary.br NEW! FOUND FOOTAGE: Lost in Paris Catacombs: Quick! Subscribe! Tweet Me: .