Underbelly: Badness, the fifth series of the Nine Network crime drama series Underbelly, originally aired from 13 August 2012 to 1 October 2012. It is an eight-part series detailing real events that occurred in Sydney between 2001 and 2012. The series began its production in early 2012 and towards the middle of the year filming eventually commenced. A teaser clip for the series was released by the Nine Network indicating the core cast of the series. Caroline Craig returns to narrate the series for a fifth time. It was the first season of the franchise not to have 13 episodes.