Uncovering human trafficking, slavery, and murder on the high seas

Teams from Greenpeace in New Zealand are behind a global operation that has exposed shocking incidents of human trafficking, slavery and abuse at sea aboard international fishing fleets.

Former police detective Tim McKinnel spent years campaigning on behalf of Teina Pora, before turning his attention to trafficking, helping to produce the new report Misery at Sea in conjunction with Greenpeace.

Stewart spoke with him about him what he managed to uncover.