The premiere of The Dark Knight Rises was the big event in Aurora, Colorado. So popular with young cinema-goers, the city's theatre complex put on an extra showing. But minutes into the film, lone gunman James Holmes, dressed as the Joker, entered the room and started firing indiscriminately. Twelve people died, many more were injured. This documentary tells the life story of Holmes, of his victims and speaks to survivors.

• Documentary
• History