Sande N. Johnsen

An artist and his wife hold art classes using nude models. Their photographer friend Pete returns from two years in Europe, and they try to convince him he has a promising career in nude photography. He eventually agrees to try it, but finds that the sight of red hair or red nail polish triggers unhealthy impulses, to the detriment of some of his models. (imdb)

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)