The 23-year-old son of New York’s Governor Nelson Rockefeller and an heir to a vast family fortune went missing in Dutch New Guinea while filming a documentary.

At the time, officials declared Michael Rockefeller had been lost at sea after the boat he was travelling on capsized.

But shortly after his disappearance rumours began circulating that he had in fact been murdered and cannibalised by local tribesman from the Asmat region.

Carl Hoffman, author of “Savage Harvest”, retraced Rockefeller’s steps in what is now the Indonesian province of Papua in search of previously undiscovered clue