Nathaniel Milevskiy

The top 24 contestants enter the kitchen for their first mystery box challenge to create a dish with ingredients chosen by 2015 MasterChef Australia winner, Billie McKay.

It's Marco Pierre White Week on MasterChef Australia. The contestants have 75 minutes to create a dish from Marco's mystery box of ingredients with rewards and hazards for the top and bottom three.

Contestants are put in teams for the Gourmet Cinema challenge. They must cater for 165 cinemagoers at a very special cinema event - the screening of MasterChef Australia's Greatest Hits.

In the first elimination challenge, three contestants choose a cloche containing a single ingredient to be used in a dish for the judges. The contestant with the least impressive dish will be going home.

The bottom three from the invention test must keep up with Marco as he demonstrates his classic John Dory dish. With no recipe or clock, who has cooked their last dish?

The top four contestants cook-off for immunity. The winner must then try and out-cook guest chef Victor Liong from Lee Ho Fook.