The document discusses the representation of social groups in a student film. It describes how the characters of the male murderer, male victim aged 20, and male detective aged 30 were portrayed. The murderer is depicted as dangerous through his dark clothing and low lit room. The victim is shown as normal through his casual clothing and activities like making a drink. The detective's experienced age and undercover clothing are highlighted. Overall, the film uses stereotypes like the dangerous dark killer but not necessarily for the detective character.