Coronation Street spoilers follow.Coronation Street is set to revisit the story of a character who has not been seen for some time.Cassie Plummer was last seen by viewers of the ITV serial drama in August, following a run-in with Tyrone's evil dad Ross. Now, a new ITV promo release has revealed that Coronation Street will mention the character again during a conversation between Ross and Tyrone's wife Fiz in upcoming episodes.