John Batis

A ghost-like family preys on luckless schmucks who spend loads of time hiking, walking through forests at night and climbing on rocks. (Chas. Balun)

A no-good Manhattan girl moves in on a Brooklyn gang. Using her obvious charms she gets the leader killed in a fight over her and then takes up with the victor and new head man. Then she starts pushing him to get out onto the streets to mix it with rival gangs. (imdb)