"The Crossbow Cannibal" is a documentary that explores the true story of serial killer Stephen Griffiths, who murdered three women in cold blood, including one caught on CCTV. The film delves into the shocking details of his crimes and his infamous statement to court where he identified himself as "The Crossbow Cannibal." Through this case, the documentary sheds light on the darker aspects of human nature and the devastating impact of violence on victims' families.