With Sarah Platt (Tina O'Brien) on remand for clobbering abusive Theo Silverton (James Cartwright) to death with a piece of scaffolding, she’s the third Coronation Street resident in the last eight months to be banged up. Sarah Platt dumps Kit Green – but news of their relationship spreads through the prisonTina O'Brien as Sarah Platt and Jacob Roberts as Kit Green. Bethany Platt (Lucy Fallon) is horrified during a prison visit to discover her mum sporting a badly bruised face, but Sarah insists it's nothing to worry about. Tina O'Brien as Sarah Platt. Tim Metcalfe's cousin Richie Parkinson is arrested for murderJoe Duttine as Tim Metcalfe and Nathan Sussex as Richie Parkinson.