Since December, fans have seen sinister Silas Blissett become a dangerous presence in the village, murdering student India Longford and Doug Carter's mysterious ex-girlfriend Rebecca Massey. He has also come close to bumping off several other female characters.
The village's residents currently have no idea that Silas is the killer in their midst, although Irish nurse Lynsey Nolan has voiced suspicions.
Discussing the future of the dark plot, Waugh told Inside Soap: "We've got some really good stuff coming up. Silas will continue to run amok and that's going to build to a big crescendo.
"Lots of people in the village are involved with the storyline, so that's what we're working towards at the moment."
Waugh's character Cheryl Brady has formed a friendship with Silas, despite Lynsey's warnings that he is not to be trusted.
The actress added: "I hope Cheryl doesn't get hurt, as I want to stay! I think the viewers will be really excited to see how it all unfolds."
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