[2][3] Newton used the name Margie Moreau in her first two films, 1979's La Vedova del trullo and 1980's The Iron Hand of the Mafia.
She also appeared in The Last Hunter (1980, also known as L'Ultimo cacciatore and Hunter of the Apocalypse), billed as Margi Eveline Newton, and in The Final Executioner (1984) and The Bronx Executioner (1989), billed as Margie Newton.
She had a cameo appearance in Claude Chabrol's Quiet Days in Clichy (1990), her most recent film to date.
In addition to her acting work, Newton also modeled in the Italian men's magazines Playmen and Ginfilm between 1984 and 1987.
She retired from show business in the 1990s to marry and raise a family.