She made her film debut in 1973 with the hardcore pornographic film Grace's Place, directed by Chuck Vincent. She was also an adult magazine model who posed for such magazines as Playboy and Gallery. Her best-known role was "Anne" in the 1975 S&M drama The Image, directed by Radley Metzger, who reportedly was her boyfriend at the time. In the movie, there are explicit scenes of fellatio and urination; however, Brooke did not perform sexual intercourse on camera. She performed full hardcore sex in the French movie Les Milles et une perversions de Felicia (The Thousand and One Perversions of Felicia), including fellatio and sexual intercourse in 1975. Brooke also appeared in softcore pornographic films directed by Joe Sarno, including Abigail Lesley is Back in Town (1975), Laura's Toys (1975), and Confessions of a Young American Housewife (1974). Brooke also had leading roles (as "Dr. Shirley Jekyll" & "Sherry Hyde") in The Switch or How to Alter Your Ego, The Blazer Girls, and Misty, and she also appeared in Mrs. Barrington and Little Girl... Big Tease. She gave up her film career in 1977.