Sci-fi drama, starring Elisabeth Sladen, from the makers of Doctor Who… Elisabeth Sladen reprises her role as former Doctor Who assistant Sarah Jane Smith. Sarah Jane Smith is a truly remarkable woman. She inhabits a world of mystery, danger and wonder. A world where aliens are commonplace and the Earth is constantly under threat. A world that Maria Jackson - a seemingly ordinary girl - can only dream of until she moves in next door. Nothing will ever be ordinary again.