Coronation Street's Claire Sweeney has opened up about her character Cassie Plumber's dark storyline, which sees her poison Ken Barlow in upcoming scenes

CORONATION Street has taken a dark twist with Cassie Plummer’s sick scheme against Ken Barlow. The troubled recovering drug addict – who is played by actress Claire Sweeney in the ITV soap

This article contains spoilers for tonight’s Coronation Street, which has not yet aired on TV but is available to watch now on ITVX. Cassie Plummer (Claire Sweeney) took drastic action in tonight’s Coronation Street after losing her job as Ken Barlow’s (William Roache) carer.