The Young Runaways

The Young Runaways is a 1968 teenexploitation film that stars Brooke Bundy, Kevin Coughlin and Patty McCormack. The supporting players are Lloyd Bochner, Dick Sargent and in one of his earliest roles Richard Dreyfuss, has a small part as Terry, a juvenile delinquent who meets a bad end.

Deannie McCormack cant stand her shrewish mother Lynn Bari constantly telling her what to do, runs away to Chicago and meets Loch Ken Del Conte, a musician who is just a tad possessive. She moves in with him, but began to have feelings for his roommate Curly Lance LeGault. Loch comes home and finds Deannie in bed with Curly. In a rage, he beats them both to death.Joannes pimp is afraid that Shelley will lead the police to him, so he has her kidnapped and held in a basement. The police find her in time and she returns home with her father. She and Dewey promise to keep in touch. ........

Source: Wikipedia