Isobella Havelstack was an alien living on Earth.
Isobella initiated a mind transfer spell that allowed the criminal Terrence Malson to enter the mind of a small boy named Jeff Smith. When Jeff was older, Isobella told Jeff of what she had done to him, and Jeff used one of Isobella's spells to erase her memory. Isobella then assumed the identity of "Mrs Havelstack". In her old years, she used to visit a café at Worthing where Jeff worked. Neither of them remembered the other due to their memories being erased. Jeff saved Isobella's life when she was held hostage by Malson's thugs by offering himself to them in exchange for freeing all the hostages. (AUDIO: Running Out of Time)