Underbelly is an Australian television true crime-drama series which first aired on the Nine Network between 13 February 2008 and 1 September 2013, before being revived on 3 April 2022. Each series is based on real-life events. There have been six full series, with season 7 being a miniseries. A 2014 series titled Fat Tony & Co is a sequel to the first series but is not branded under the Underbelly title.