Neil (The Muscle) Cummins. A notorious Sydney hard man who spent 15 years on the doors of the cities most prestigious nightclubs, managing the streets for the Kings of the Cross and watching the backs of some of Sydney’s most famous and infamous underworld identities. Secrets of the Underworld is not for the faint at heart, an insightful and real look into the Sydney Underworld and the real Kings Cross between 1998 - 2013.