Cathy's trouble-making sister Nessa returns to Coronation Street. Will she wreck Roy's wedding plans?

With Roy displaying clear signs of pre-wedding jitters, the last person he probably needs hanging around the cafe in Corrie is his bride Cathy’s sister, Nessa.

The irredeemable¬† flirt has previously wreaked havoc on the Street, and Cathy has never got over the fact her husband and sister had an affair. As Cathy’s insecurities return along with Nessa, is her wedding to Roy in serious jeopardy?