As first revealed in reports last month, Maria is to suffer a terrifying ordeal when she visits the businessman's home to help clinch a deal for Underworld boss Carla - only for Frank to take advantage of the situation in a disturbing fashion.
Speaking to All About Soap, Smith explained: "She's absolutely terrified. He starts groping her all over and has his hand up her thigh. He basically tries to rape her but she manages to struggle out of his grip and runs from the house screaming and petrified."
In the aftermath of the frightening experience, Maria struggles with the prospect of reporting Frank (Andrew Lancel) to the police because she knows Underworld is struggling and his business is vital.
Smith continued: "Carla wants her to go straight to the police, but Maria knows that if she does, the factory will be in financial trouble and everyone will lose their jobs.
"Maria doesn't want to be responsible for everyone being out of work. It's a horrible, no-win situation for Maria and she just doesn't know what to do."
The storyline begins on screen early next month.
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