Viewers in Australia have recently seen a murder mystery begin in Summer Bay after bad boy Stu, played by Brenton Thwaites, was found dead at the local caravan park.
The resolution to the story will see one character arrive at the police station to confess their involvement in Stu's death.
Mitchell, who plays Romeo Smith, told TV Week: "There are so many possibilities of people who could've killed him, and so when it comes out who has actually killed him, it will be a big surprise because that person isn't in the spotlight."
He added: "Then it turns into the story about how it happened and what now happens to that person. Is it murder or an accident? And what happened on that night? There are a lot of possibilities."
Stu made many enemies before his death as he attacked girlfriend Sasha (Demi Harman) on a number of occasions, leaving her family and friends horrified.
Home and Away airs these scenes next week on Network Seven in Australia and late March on Channel 5 in the UK.
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