text: The episode starts with a thirteen year old girl , Maria Jackson ( Yasmin Paige ) , and her recently divorced father Alan ( Joseph Millson ) moving into a house opposite journalist and former time-traveller Sarah Jane Smith ( Elisabeth Sladen ) .
simplified: This episode begins with Maria Jackson ( Yasmin Paige ) and her divorced father , Alan Jackson ( Joseph Millson ) , moving into the house across the road from Sarah Jane Smith .