 An estimated 22 million viewers watched Lisa confess to Phil's attempted murder, causing the third-largest power surge on record.Other storylines included; Lisa's pregnancy with Phil's child although opted not to tell him and claimed that her partner, Mark Fowler (Todd Carty), is the father, giving birth to Louise Mitchell (Rachel Cox/Brittany Papple/Tilly Keeper) and in the show's Christmas 2001 episodes, Louise's parentage is revealed.During her most recent stint, storylines have centred around her daughter Louise's pregnancy, falling out with and coping with best friend Mel Owen's (Tamzin Outhwaite) death, a feud with Sharon Mitchell (Letitia Dean) and making amends with Phil.