When their parents separated, Heather and Sonia Merton agreed to spend weekdays with their Mom and weekends with their dad. Heather was eager to make the friendly agreement work, but Sonia was bitter and decided to take revenge on their parents any way she could. Realising what she was doing Heather was determined to save what family togetherness still remained.
- Artist: Carlos Freixas
- The Revenge of Sister Sonia – Tracy: #211 (15 October 1983) – #219 (10 December 1983)