Serial Killer Documentaries » Brilliant documentary by David Monaghan chronicling the life and crimes of American serial killer Glen Rogers, a.k.a, the 'Casanova Killer' as told by the man who knew him best - his childhood friend, partner-in-crime and older brother Carl... documentary gained wide media attention for one of the claims made by the Rogers family that their brother Glen had confessed to them about murdering Nicole Simpson & Ron Goldman at the behest of O.J Simpson.