She was in the 1969 outlaw biker film Run, Angel, Run directed by Jack Starrett and the 1972 women in prison film The Hot Box co-written by Jonathan Demme. She also appeared in the dark sex comedy/murder mystery Pretty Maids All in a Row (1971) with Rock Hudson, directed by Roger Vadim. Markov also starred opposite Pam Grier in two films, the 1972 Black Mama, White Mama and the 1974 The Arena (aka Naked Warriors). During the making of the latter she started dating Producer Mark Damon; the two later married and Markov retired.