A helicopter crashes into the harbour, colliding with an overcrowded sightseeing boat. As Tommy, Gavin, and the divers fight to save the lives of a young couple trapped below decks, the detectives' ...

Beneath its surface exists a playground for the murky underworld, a place of illicit rubbish dumps. pollution hazards, the remnants of huge drug hauls, and a graveyard of bodies from years of suicides ...