[flamingGalah!]

Hitting Oz screens next week...

Fans will be stunned to discover that Sonya is Callum's mum - but what will happen when Toadie finds out?

This is the bombshell revelation you won't have seen coming! In a stunning development on Neighbours next week, the secret Sonya's been desperate to protect is finally revealed - she's Callum's mother! Certainly, Jade is shocked beyond belief when she discovers what her older sister has been keeping from Callum and Toadie. But will Jade blow Sonya's explosive secret wide open? Eve Morey, who plays the guide dog trainer, admits she was stunned when the show's producers took her aside to brief her on this shocking storyline development. "It's huge," Eve agrees. "I didn't even have words for it. When I was told of the storyline, I couldn't speak for 10 minutes. I was just sitting there with my mouth open going, 'What?'"

As Eve notes, ever since Sonya arrived in 2008, there's never been even the slightest indication she's related to Callum. After all, she met Callum and Toadie through what we believed to be a chance encounter - training the pair's puppy, Rocky. After many ups and downs in their love-life, Sonya recently moved in with the lawyer and his adopted son. But now this? "Initially, I thought, 'How could this work - Sonya being Callum's mum?'" Eve concedes. "But then I realised it does work. All of a sudden, it creates even more depth and complexity to Sonya and the decisions she's made and her motivations for things like forgiving Toadie for his and Steph's sham marriage. There's this whole other layer," the actress says. "But Sonya's feelings for Toadie are genuine."

Asked how it could be possible that Callum wouldn't remember his own mum, Eve says that's one of the issues addressed. "We did have to look at that," she agrees. "But he's never known much about his mother. His great-grandmother raised him and never gave him much information since she was so disappointed in Sonya, who had Callum at 16. I also think Callum's blocked out any image he had of her, who he hasn't seen for many years." And as for why Sonya herself hasn't told Callum the truth, Eve believes that it's because she "doesn't feel deserving of being his mother". "Sonya hates the person that she used to be and wants to distance herself from that person completely," she continues. "She thinks it's better that Callum knows her like she is now - that she simply give him the support he needs now instead of him identifying with the old and very troubled Sonya." But the big question, of course, is will Callum and Toadie discover the shocking truth? Either way, Eve promises us that there's plenty more to come! "It's really great to play," she enthuses.

Sourced from TV Week (Australia)