Bill Potts works at the cafeteria at St Lukes University. Here she met Heather who was taken over by a creature called the Pilot. She thought she lost Heather and then started traveling with a man called the Doctor. However Heather left Bill her tears and she came back to take Bill with her. Together they fly round the universe. What adventures will they get up to? #DoctorWho #DoctorWhoSeries10 #DrWho #BillPotts #Heather