Contenders Shane Taas, Georgie Low, Mark Panayiotis Notaris and Maddie Beck are back with French gastronomy, the history of East Timor, the renal system and singer Kelly Clarkson.

In the weekly final, the final heat winners return for one last chance to claim the final spot in the semi-finals. Tonight's slowburns are a character, a film director, a song and a toy.