Gilly (Anthony Quinlan) has been absent from screens since April, when he decided to spend some time away from home to clear his head after being found not guilty of raping Jacqui.
Since then, Jacqui has tried to recover from her ordeal and embarked on a long journey to get her relationship with Rhys back on track. However, their progress could be thrown into jeopardy when Gilly makes his comeback.
Speaking of Gilly's return, Moss told Inside Soap: "Rhys and Jacqui's lives are going to be turned upside down again. Jacqui handles the whole thing really well. She's calm, because she doesn't want to show Rhys how she really feels about it.
"But Rhys flies off the handle - he wants to smash Gilly's head in."
Back in May, Claire Cooper - who plays Jacqui - told Digital Spy that show bosses were planning a resolution to her story with Gilly.
She said at the time: "It's an ongoing story and it is going to be concluded… Some people believe Jacqui and some people don't, but the story progresses and the conclusion to the story will happen later in the year."
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