Neighbours spoilers follow.
Neighbours favourite Karl Kennedy faces trouble next week as his secret is uncovered by the worst possible person.
Karl finds himself at the mercy of ruthless Darcy Tyler after the manipulative character catches him in a vulnerable moment.
Erinsborough legend Karl has recently returned to town after suffering nasty injuries in a motorcycle accident abroad.
Although Karl's wife Susan believes that he's well on the road to recovery, the reality is very different. Karl has become overly reliant on strong painkiller medication, but is concealing these struggles from everyone around him.
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This week, Darcy arrives back on Ramsay Street as part of Neighbours' exciting 40th anniversary episodes.
Darcy moves onto the Street as Terese Willis's new tenant at No.22. The property is currently lying empty as Terese and Nell Rebecchi have decided to move in with Paul Robinson at the Lassiters penthouse.
Susan and Karl aren't pleased to see Darcy back, lamenting the long list of misdeeds from his colourful past.
In follow-on scenes next week, Susan gets on the phone with her sister Carmel to discuss Darcy. She's reassured that it's safe to give Darcy the benefit of the doubt following his return, although Karl remains wary.
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Later, Susan and Karl overhear Darcy on the phone to someone and they figure out that he does have an ulterior motive for being back in town.
Darcy explains that he wants to open an integrated health clinic and is searching for investors, but it's all above board.
Events take a turn when Karl's addiction gets the better of him and he starts rummaging around the Kennedy house, desperately searching for more pills.
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Darcy catches Karl in the act and realises that he's taking more than the recommended dose. He calls out Karl for being reckless when he should know better, but will Darcy tell anyone what he's seen?
Mark Raffety has reprised the role of Darcy for this return stint. He last featured on the show in 2005.
Neighbours airs these scenes on Monday, March 24.
Neighbours releases new episodes from Mondays to Thursdays for free on Amazon Freevee and Prime Video in the UK and US. In Australia, the show airs from Mondays to Thursdays at 4pm on Channel 10, with a 6.30pm repeat screening on 10 Peach Comedy.
