Earlier this month, Hassan's character Lynsey discovered Silas's true colours when he broke into her flat and attacked her. She later spread the word about his behaviour around the village, although few people believed her story.
In a new interview with All About Soap, Hassan revealed that Silas (Jeff Rawle) soon seizes an opportunity to get even with Lynsey when he spots her handing over diet pills to Cheryl Brady (Bronagh Waugh).
She explained: "Lynsey buys the pills for Cheryl off the internet, which is completely innocent. But Silas spots Lynsey giving the pills to Cheryl and sees an opportunity to get his own back. His evil instincts kick in once again and he slyly swaps Cheryl's diet pills for his own medication.
"Poor Cheryl takes the wrong pills and ends up collapsing in Chez Chez. Lynsey and Rhys find her slumped unconscious in the club. It's a terrifying moment for Lynsey, who's overcome with guilt for putting her best friend in hospital."
Discussing the aftermath of the incident, the actress continued: "The doctors tell her that a high level of sedative has been found in Cheryl's blood, but Lynsey is completely flummoxed by how it could have got there. It doesn't cross her mind at this stage that Silas would have wanted to hurt Cheryl. However, I think the penny will eventually drop for her."
Hassan added that Silas is trying to "blacken" Lynsey's name with the scheme, which will play out on screen in the middle of next month.
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