Home and Away spoilers follow for UK viewers.
Home and Away's Justin Morgan is quick to arouse suspicion on UK screens next week after Susie McAllister's body is found.
A murder mystery begins after fishermen find Susie's remains out in the sea, but while many of the locals express shock and sympathy, Justin isn't shedding any tears for the woman who cruelly conned him.
Here, James Stewart – who plays Justin – reveals his role in the whodunit story.
Why are the cracks beginning to widen between Justin and his partner Leah?
"At the moment, Stephen is around all the time because he is helping Leah track down Susie. While Leah spends all her time trying to find Susie with another man, Justin finds himself taking more painkillers to help relieve the back pain caused by his surfing accident.
"Leah and Justin are not seeing eye to eye on the whole Susie situation. Justin thinks Leah should let the police handle it, while Leah thinks otherwise. They are both travelling down different paths and find themselves spending less and less time together.
"Justin is also so preoccupied with what's going on with himself that he's not really paying enough attention to Leah."
Has Stephen's presence made matters worse?
"Justin is a plain old red-blooded male. I think when your partner brings a mate home that is getting way too close, anyone would have a problem with that.
"For Justin, tracking down Susie opens up a world of physical and emotional pain that he wants to distance himself and Leah from.
"Justin believes that it's not worth tracking Susie down, not only because of the physical risk but also the psychological nightmare of constantly trying to find this person, it would be a waste of life.
"Additionally, Justin thinks tracking down Susie is way too dangerous. He doesn't want to see Leah get hurt. Getting justice is not worth her life."
We see that Justin's reaction is different from that of the other characters when Susie's body is found. Can you tell us more?
"It is a tragedy when the body washes up in the Bay, but it's not high on Justin's list of priorities. That's just where Justin's mind is at the moment – he just really wants and needs to get home to take some more medication.
"There is also a little bit of 'serves you right' too, which is really unthoughtful and uncaring for Justin to think."
Justin quickly becomes Cash's top suspect, but does he have any theories himself over who the killer could be?
"Justin doesn't have any suspicions at all. It really stumps him that he is a part of the suspect line up.
"Here is a guy freaking out, needing his painkillers and all of a sudden he is accused of murder and sitting in a cell not being able to get to his medication."
We've seen a completely different side to Justin's character while he has been addicted to painkillers...
"It has been difficult. Talking about addition is a very delicate subject. It has been one of the most challenging and gruelling storylines I have ever told.
"I really wanted to get it right, so I did an immense amount of research. It was harrowing, it was fulfilling and I just thank all the directors that I got to work on it with for letting me go to slightly darker places.
"I want my daughter and other families who are watching this to be able to understand the larger conversation surrounding addiction."
Can you hint at where it's heading?
"What is coming up is make or break. Justin really has to take a good look at himself and change his behaviour."
Home and Away airs weekdays at 1.15pm and 6pm on Channel 5 (UK), with first look screenings at 6.30pm on 5STAR. Selected classic episodes are available via Amazon Prime Video in the UK.
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