Robert Charles Browne is an American serial killer convicted of two murders and serving a double-life sentence in the Colorado Territorial Correctional Facility. Browne is also a self-professed serial killer, alleging that he killed 48 people, mostly women, as well as an additional woman in South Korea during his time in the US Military. Though many claims made by Browne remain uncorroborated if accurate his account would make him one of the most prolific serial killers in American history.