Episodes airing in the UK this week see Tash left stunned after learning that the cause of her late mother Helena's death was drowning - a fact that her dad hid from her for many years. A young Tash was also in the water at the time of the tragedy and survived after Michael (Sandy Winton) rescued her.
In a new interview with TV Week, Novakovic confirmed that there is even more to be revealed about Michael's actions on the fateful day in upcoming episodes.
Novakovic explained: "It's something to do with the day her mother died and there's a reason why her dad couldn't save them both.
"He couldn't save them both because he was too late getting there - and it's the reasoning behind that. It's very shocking and juicy!"
The latest stage in the plotline begins to unfold in Neighbours' 2011 season finale week, which sees Tash, her aunt Emilia (Freya Stafford) and Michael head to the beach where Helena died.
Novakovic explained: "It's kind of saying goodbye. It's really letting go of that part of her life. It's quite an emotional time.
"She likes that Emilia is there, but Michael is a bit funny about it."
Neighbours' season finale week airs next month on Eleven in Australia and early next year on Channel 5 in the UK.
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