An extremely elusive criminal leads police on a marathon eight-hour chase through suburban backyards in an astonishing and dramatic tale of cat and mouse. Against the backdrop of beautiful Sydney Harbour, NSW Water Police are on a three day maritime operation targeting boating safety. Then, at Darwin Airport officers from the Substance Abuse Intelligence Desk, aided by the drug detection dog 'Puma', are on duty for random checks of passengers and their baggage. And It doesn't take long Puma's finely tuned nose to pick up a scent.