The shotgun-toting murderer escaped from a prison van earlier this week, only to hole up in the Woolpack with a group of hostages during a fierce storm.
And, of course, it wasn't long until villagers were forced to fight for their lives.
Marlon was knocked unconscious and left at risk of drowning in the pub's flooded cellar, while Alicia was shot in the stomach during the dramatic siege.
But arguably the worst of Cameron's wrath was reserved for those to whom he was once closest - Chas and Debbie Dingle.
Thursday night's double instalment saw the battle to evade his clutches move to the cellar, where Debbie struggled to save her aunt Chas from drowning when she became trapped underwater.
What I get from audiences is: ‘I like him and I don’t know why I like him! I should hate him - he’s a murderer...’
Dominic Power, Emmerdale’s Cameron Murray
In nail-biting scenes, Debbie's own screams of terror were cut off as her former fiancé loomed out of the water to grab her. Sensing that his own chances of escape are dwindling, would he really drown the woman he claims to love?
While their characters' lives may have been hanging in the balance, actors Mark Charnock (Marlon), Charley Webb (Debbie) and Lucy Pargeter (Chas) were thrilled to be filming their tense underwater scenes at the renowned Pinewood Studios.
Many a Hollywood blockbuster has been filmed there, but Emmerdale's epic stunt proved to be something of a small-screen first.
"Brad Pitt walked past yesterday. Brad Pitt," Mark revealed.
"He went: 'All right, Marlon?' I went: 'Back off, Brad, I'm working.'"
But on a serious note, the actors all had to deal with learning to dive and to focus on the directions given to them despite being underwater.
While Lucy was proclaimed to be "a fish", Charley admitted: "I was the real girl one that couldn't do it, but I have got a lot better. I wasn't panicking though, was I?"
And with over 1.2m litres of water in the special tank used to lower the set of the Woolpack cellar into, no wonder they found it challenging.
If it looks exciting, dangerous and real, that’s because it is.
Mike Valentine, underwater director of photography
In an exclusive post-show interview, Dominic Power who plays Cameron revealed what the whole experience of his role had been like.
"I gather you've just watched the ep - I hope you enjoyed it," he smiled.
"What's it been like playing Cameron? Cameron, Cameron, Cameron. Dear, oh dear, where to start?"
With fellow bad-boy Carl King, farmhand Alex Moss and new mum Gennie Sharma already on his list of victims before the siege ever got underway, Cameron has certainly caused carnage in the Dales.
"I'm so lucky that I've been given such rich and plentiful stories to work with," Dominic said.
He also confessed that killing Carl had made him quite nervous as he had to hit actor Tom Lister.
"It might have been a polystyrene brick, but it was quite a hard brick ..." he said.
But viewers finally saw Cameron's reign of terror over the village come to a shocking end, literally.
Citing the people as the thing he'd miss most about Emmerdale, Dominic spoke about the bond between the actors.
"You do form a real bond, you form a closeness," he said.
"And then when you kind of realise that all that's coming to an end ... Yeah, absolutely, I'm going to miss everyone."
The next episode of Emmerdale is on UTV on Friday at 7pm.