I've just finished reading 'The Doctor Trap' - one of the 3 new Doctor/Donna novels (by Simon Messingham).

I thought it was a brilliant (and very different from usual) story but one thing I still don't get, and i'm hoping someone else can help with, is where did Baris or Sebastiene get a TARDIS key from?? It's obviously a real key cos it opens the door at the start when it is still definatly Baris, and not the Doctor pretending to be him. But as far as I could see it never got explained. Or maybe it did and I completely missed it.

Anyone else notice where it came from??