- You may be looking for the invalid character.
During the Twelfth Doctor's imprisonment in the Prison, Clara took one of Class 2A's art lessons. She asked the students to paint a placard with the phrase "SAVE THE DOCTOR", but instead they got confused and began to paint "SAVE DOT COTTON". (PROSE: The Blood Cell)
Behind the scenes Edit
- Clara's description of "famous Cockney chimney" refers to Dot being a well-known chainsmoker.
- She was played by Doctor Who guest actor June Brown.