One of the great mysteries of World War II - the fate of the missing Japanese midget submarine that attacked Sydney Harbour - could be revealed next week.
The State Government's Heritage Office will investigate the almost four years of research handed to them by the makers of M24: The Last Sunrise.
And in a live telecast on Fox 8 on November 28, cameras will explore what is believed to be the location of the missing two-man submarine.
M24 was part of a force of three midget subs that torpedoed one ship and killed 21 Allied sailors on the night of May 31, 1942.
"Over the past four years we've looked at all of the existing evidence and theories of where M24 might be," producer Damien Lay of Animax Films said.
Mr Lay said he was not "100 per cent" sure their new theory was right but viewers could make up their own minds.