Coronation Street fans have spotted a huge mistake on Sarah Barlow's part - as Lydia Chambers' stalking ramped up.
Vindictive Lydia (Rebecca Ryan) has been causing havoc for Sarah (Tina O'Brien) and her husband Adam Barlow (Sam Robertson), leaving them both terrifying messages and messing with their flat.
Both Sarah and Adam have no idea it's Lydia behind all the stalking, with both of them convinced it must be an enemy of Adam's, who has targeted him in the past in a campaign of harassment.
