Getty New information has emerged in the cold-case murder of an actress linked to Joe Namath. In the darkened night of February 12, 1977, a 28-year-old Hollywood actress with a reputation as a “party girl” was brutally murdered on a quiet street in West Hollywood, California. Christa Helm — who was born in Milwaukee, Wisconsin , with the given name Sandra Lynn Wohlfeil — was stabbed a reported 22 times as well as bludgeoned on the head and face with a blunt object or fist. Her murder has never