Earlier this month, viewers saw Irish hard man Brendan Brady shocked by the arrival of his father Seamus. Having been abused by his dad when he was younger, Brendan struggles with his presence in the village.
Scanlan told What's On TV that Brendan is driven to desperate measures as he realises the problems Seamus has caused him.
He explained: "[Seamus's arrival] was a punch in the gut! Once Brendan had reunited with Ste in Dublin it felt like an exorcism of his past. You could see him being ready to move on. Seamus in Hollyoaks means Brendan's back to square one.
"[Initially] there's too much fear there for Brendan. He's still scared of the man who raped him as a child. There's also Cheryl to consider. She thinks the sun shines out of Seamus's you-know-what. Her and Brendan's childhoods were vastly different. Brendan doesn't want to ruin his sister's happy memories."
Despite his reservations, Brendan soon concocts a plot to dispatch his father with the help of Joel.
"Seamus kept making all these comments under his breath, like 'Poof!'. He was embedding himself into life in Hollyoaks and Brendan realised just how much he hated this man and how he needed to get him out of the way," Scanlan revealed.
Joel agrees to kill Seamus for his share of the club - £200,000 - and Seamus subsequently goes missing.
While Brendan is ruthless in getting rid of Seamus, Scanlan said that he does not relish the plan.
"It's wrong to say Brendan is ecstatic about getting his father killed. It was a necessary evil," he explained.
"But if Seamus were to survive it would be a total catastrophe for him. God knows what he might do!"
The plot will air early in the new year.