Martine went on to appear in One Million Years B.C. opposite Raquel Welch, with whom she also engaged in a catfight. She then appeared in various Hammer Studio low budget films, most notably Prehistoric Women and the gender-bending Dr. Jekyll and Sister Hyde. She played Adelita in the well-regarded Spaghetti Western A Bullet for the General in 1967 opposite Klaus Kinski and Gian Maria Volonté. She starred as the Queen of Evil in Oliver Stone's 1974 directorial debut, Seizure, aka "Queen of Evil". In the 1970s, Beswick moved to Hollywood and regularly appeared on both the big screen and small screen. She made numerous guest appearances in TV series including Sledge Hammer!, Fantasy Island, The Fall Guy, Mannix, The Six Million Dollar Man and Falcon Crest. In 1980, she played the lead role in the comedy film The Happy Hooker Goes to Hollywood.