Nicholas Burns

Thin Ice

On the subject of an elephant and a frozen Thames Bill Potts (Pearl Mackie): Okay, I have questions. {The Doctor goes back in the TARDIS} Bill: You never said we could travel to parallel worlds. The Doctor (Peter Capaldi): Not a parallel world. Bill: But that’s London. The Doctor: Our London. We're on the Thames. The Last Great Frost Fair. 1814. February…