After several years alone, Peggy found romantic comfort with her former brother-in-law Archie Mitchell (Larry Lamb) who she had a brief fling with decades earlier during her toxic marriage to his brother Eric. But Archie was just as rotten as his sibling and soon showed his true colours. Slowly but surely, Archie mentally abused Peggy, making her change her looks and personality.
Peggy married Archie in April 2009, plucking up courage to dispense with the dowdy wedding suit he had ordered her to wear and instead don a much more striking outfit. Prophetically, the marriage ended just hours later at the reception when Peggy discovered Archie’s despicable role in faking the death of his granddaughter Danielle (Lauren Crace). Peggy threw Archie out and even conspired to have him murdered. After Archie’s eventual Christmas Day murder months later, Peggy became a prime suspect before being cleared.