These two films and the success of her Lamb's Rum posters attracted the attention of Hammer Film Productions CEO James Carreras who liked Caroline's posters so much that he tracked her down and brought her in for a screen test. She was signed to a one year contract and was given her first role in Dracula AD 1972. After filming, she decided to make acting her first priority instead of modelling. Until that time she thought of herself as a model who also did some acting, now she was an actress who also did some modelling. In 1974 she finished her contract with Hammer Studios as the gypsy girl in the swashbuckling adventure Captain Kronos - Vampire Hunter. Hammer still wanted her in their films but Caroline declined roles in Dr. Jekyll and Sister Hyde and Frankenstein and the Monster from Hell because they would require her to be naked. She would adhere to this personal no-nudity clause throughout her acting career, which of course would cost her roles.
In the 1980s Caroline's films were more trashy and "grindhousey." She was in Maniac (1980) which was a gory and controversial slasher, then The Last Horror Film (1981), Slaughter High (1986) where she played a teenager at the age of 36, Paul Naschy's Howl of the Devil (1987), Jess Franco's Faceless (1988) and Luigi Cozzi's The Black Cat in 1989 - which would be her last major film performance. During this decade she was also in music videos for Meat Loaf and Adam Ant and even released a dance single of her own called "Pump Me Up" in 1984.