Pretty Poison (1968) is a thriller film directed by Noel Black, starring Anthony Perkins and Tuesday Weld, about an ex-convict and high school cheerleader who commit a series of crimes.
While not generally considered an example of neo-noir, the film does include certain elements of the genre, including a femme fatale, a character trapped into circumstances beyond his control, criminal protagonists and, of course, murder.
The film was based on the novel She Let Him Continue by Stephen Geller; this was also the working title of the film.
There was a 1996 remake with the same title and plot.
Dennis Pitt is a disturbed young man on parole from a mental institution who becomes attracted to teenaged cheerleader Sue Ann Stepenek. He tells her that he is a secret agent, and takes her along on a series of "missions" that eventually end in murder. While Dennis is racked with guilt over both what he has done and what he has allowed to happen, Sue Ann is excited by the "adventure" and entreats...