The most consistent finding in the study of crime is the relationship between crime and gender. In almost every country, over 80% of crime is committed by males. But in recent years, the gender gap in crime has been closing: the male crime rate has been steadily falling while the female crime rate, especially for violent crime, has been increasing. In the US, the number of women in prison has almost doubled in the last 25 years.  The short film looks at explanations for gender differences in crime and why things may be changing.