She also had roles as James Coburn's flower child friend in The President's Analyst (1967), and appearances in Jack Webb's television series, Dragnet.
Banner's film acting began in 1964 with Spider Baby, also starring Sid Haig and Lon Chaney Jr. and directed by Jack Hill.
However, the film was tied up in litigation and was not released until 1967 under various titles, including Attack of the Liver Eaters, Cannibal Orgy, and The Maddest Story Ever Told.
In 1967, she played Wendy, a wholesome teenager, in C'mon, Let's Live a Little, one of the last of the Beach party films,[citation needed] and as Caroline in the Spaghetti Western The Stranger Returns.
[1] In the psychedelically paranoid spy spoof The President's Analyst (1967), Banner played a flower child named "Snow White" who temporarily rescues Dr. Sidney Schaefer from a combined conspiracy of the American CIA, the Russian KGB, and The Phone Company (referred to cryptically as "TPC").
Banner performed in several movies and TV shows in the late 1960s and early 1970s, including Shadow Over Elveron (1968) with Don Ameche and Adam-12 co-star Kent McCord.