Caroline Craig has served as the series' narrator across 68 episodes and also appeared as Jacqui James in specific installments. Paul Tassone portrayed the character Dennis Kelly in 24 episodes, most notably in the second season, A Tale of Two Cities .
The show uses a docudrama framework to examine complex themes of loyalty, revenge, and the breakdown of social decency, often focusing on significant crime waves in Australia from the 1970s to the early 2000s. Underbelly (2008)Caroline Craig, Paul Tassone
The first series was filmed at over 150 urban locations in Melbourne to maintain high historical accuracy, mirroring the actual sites where the events occurred. Season Breakdowns (2008–2011) Underbelly (TV Series 2008–2013) - IMDb Caroline Craig has served as the series' narrator