Steve 's former girlfriend , Saskia Duncan ( Deborah Sheridan - Taylor ) arrives .
Steve 's former girlfriend , Saskia Duncan ( Deborah Sheridan - Taylor ) tries to come between Steve and his new girlfriend Mel Healy ( Tamzin Outhwaite ) .
Steve 's former girlfriend , Saskia Duncan ( Deborah Sheridan - Taylor ) arrives and tries to come between Steve and his new girlfriend Mel Healy ( Tamzin Outhwaite ) .