Given the question: Generate a question about the following movie plot: Somewhere deep inside the Santa Fe desert there have been a number of blood curdling murders...a real killing spree. The local police station is in disarray. Captain Billings, Officers Degrasso and Wright have apprehended three witnesses: Officer Jack Bennet, one of their own, tough, but affected by recent events; Bobby, young, high as a kite on cocaine; and Stephanie, eight years old, who has just witnessed her family being brutally murdered by two figures dressed in jumpsuits, gloves, boots, and horrifyingly disfiguring latex masks. The FBI is now involved, and as the witnesses tell their stories one by one to the FBI agents who have now taken over, the murderous events unravel before our eyes. It becomes clear, however, that little Stephanie knows something more. And then three more bodies have been found...
The answer is:
How old is Stephanie?