Pretty Poison (film)

Pretty Poison 1968 is a psychological thrillerblack comedy film directed by Noel Black, starring Anthony Perkins and Tuesday Weld, about an exconvict and high school cheerleader who commit a series of crimes.

Dennis Pitt is a disturbed young man on parole from a mental institution who becomes attracted to teenager 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 Dennis to run away with her to Mexico. First, however, they have to get rid of her disapproving mother.Dennis knows that the police will take Sue Anns word over his, so he takes the blame for their crimes. Sue Ann, meanwhile, betrays him without a second thought, sending him to prison for life. Dennis is more than happy to be locked up, as it keeps him away from Sue Ann, of whom he is now quite frightened. While Dennis refuses to tell his skeptical parole officer Azenauer the truth, he asks him to see what Sue Ann is up to in hopes she will be exposed for what she really is. The film ends with Sue Ann meeting a young man and lamenting to him that the people who took her in after her mothers death wont let her stay out late it is implied that she will use and destroy him just as she did Dennis. But Dennis parole officer is indeed watching as she departs with her latest victim. ........

Source: Wikipedia